Brazil's President Dilma Rousseff (L) and her daughter Paula ride towards Congress for Rousseff to be sworn in for a second four-year term in Brasilia January 1, 2015. Rousseff has pledged to take a stance against corruption and must also reverse economic weakness that has cost her support among Brazil's middle class as she looks forward to her second term. (Photo by Ricardo Moraes/Reuters)

Brazil's President Dilma Rousseff (L) waves as she and her daughter Paula ride towards Planalto Palace after Rousseff was sworn-in for a second four-year term in Brasilia January 1, 2015. (Photo by Ricardo Moraes/Reuters)

A “Galejador” climbs the selected pine up during 'La Festa del Pi' (The Festival of the Pine) in the village of Centelles on December 30, 2014 in Barcelona, Spain. Early in the morning men and women born in Centelles, who are named “Galejadors” wear their traditional costume with the Catalan red hat known as “Barretina” and carry their shooting muskets as they walk into the forest to chop down a pine tree, load it on an ox cart and take it to the church in the village. There the pine tree is decorated with five bouquets of apples and wafers and hung inside a church until January 6. The tradition has been documented since 1751 and it is believed its origins are related to the trees and the pagan worship of fertilization related the winter solstice. (Photo by David Ramos/Getty Images)

Chinese folk artists dressed in costume drama wait to take part in a New Year's Eve count down to 2015 during a New Year's eve countdown event to promote the city's 2022 Winter Olympic bid at Olympic Park on December 31, 2014 in Beijing, China. (Photo by Lintao Zhang/Getty Images)

Indonesian Navy personnel evacuate recovered dead bodies of passengers from AirAsia flight QZ8501, on the the deck of the Indonesian Navy vessel KRI Banda Aceh, at sea January 3, 2015. Ships searching for the wreck of an AirAsia passenger jet that crashed with 162 people on board have pinpointed two “big objects” on the sea floor, the head of Indonesia's search and rescue agency said on Saturday. (Photo by Adek Berry/Reuters)

Caskets containing the remains of AirAsia QZ8501 passengers recovered from the sea are carried to a military transport plane before being transported to Surabaya, where the flight originated, at the airport in Pangkalan Bun, Central Kalimantan January 2, 2015. Ships and aircraft criss-crossed the seas off Borneo on Friday hunting for the wreck of the Indonesia AirAsia passenger jet, but bad weather was again hindering the search for the plane and the black box flight recorders that should reveal why it crashed. (Photo by Darren Whiteside/Reuters)

Indonesian Army carry the coffin of Kevin Alexander Soetjipto, a victim of the AirAsia flight QZ8501, after he was handed over to his family at the police hospital on January 2, 2015 in Surabaya, Indonesia. A massive recovery operation has begun following confirmation from Indonesian officials that remains and debris found in waters off Borneo are from the missing AirAsia plane. Flight QZ8501 from Surabaya to Singapore, with 162 people on board, lost contact with air traffic control at 07:24 a.m. local time on December 28. (Photo by Oscar Siagian/Getty Images)

The car ferry Norman Atlantic is drawn by tug boats on its way to Brindisi harbour, after a fire in waters off Greece January 2, 2015. The ferry caught fire off Greece's Adriatic Coast on December 28, 2014 while on a voyage to Italy. (Photo by Ciro De Luca/Reuters)

The Norman Atlantic multi-deck car-and-truck ferry is seen at the dock of Brindisi harbour, after a fire broke out on it off the coast of Greece, January 2, 2015. Tug boats hauled the burnt-out hulk of the ferry to the southern Italian port on Friday, opening the way for an investigation into the cause of the blaze that killed at least 11 people. The ferry caught fire off Greece's Adriatic Coast on December 28, 2014 whilst on a voyage to Italy. (Photo by Ciro De Luca/Reuters)

A mother (C) of a victim cries at the location where people were killed in a stampede incident during a New Year's celebration on the Bund in Shanghai January 2, 2015. The stampede killed at least 36 people, authorities said, but police denied reports it was caused by people rushing to pick up fake money thrown from a building overlooking the city's famous waterfront. (Photo by Aly Song/Reuters)

A man who only gave his surname Zhao shows a photo of his girlfriend Pan Haiqin who was killed in the deadly stampede in Shanghai, China, Friday, January 2, 2015. People unable to contact friends and relatives streamed into hospitals Thursday, anxious for information after a stampede during New Year's celebrations in Shanghai's historic waterfront area killed 36 people in the worst disaster to hit one of China's showcase cities in recent years. (Photo by Ng Han Guan/AP Photo)

A Palestinian protester holds his daughter, who is dressed as Santa Claus, as he sits next to Israeli soldiers during a weekly protest against Israeli settlements, in the village of Maasara near the West Bank city of Bethlehem January 2, 2015. (Photo by Mussa Qawasma/Reuters)

Local residents dressed as Father Frost, an equivalent of Santa Claus, and his granddaughter Snegurochka (Snow-Maiden), walk with servicemen as they visit check points of the Ukrainian army and self-defence units to congratulate the military with the coming of a New Year, near Lysychansk, Luhansk region, January 2, 2015. (Photo by Maksim Levin/Reuters)

Residents evacuate a civilian injured in a car bomb explosion near the Taleex junction of Somalia's capital Mogadishu, January 2, 2015. One person, who was in the car when the explosion occurred, died in the incident, for which Al-Shabaab claimed responsibility, and three others were injured, according to local media. (Photo by Feisal Omar/Reuters)

An Oakland Raiders fan tailgates prior to an NFL football game against the Denver Broncos, Sunday, December 28, 2014, in Denver. (Photo by Joe Mahoney/AP Photo)

Afghan refugee boys play with balloons near their mud homes on the outskirts of Islamabad, Pakistan, Tuesday, December 30, 2014. (Photo by Muhammed Muheisen/AP Photo)

People watch fireworks exploding over Copacabana beach during New Year celebrations in Rio de Janeiro, Brazil, Thursday, January 1, 2015. (Photo by Felipe Dana/AP Photo)

A tourist, left, grimaces as a street entertainer places her doves on him for his friend to photograph, in Madrid, Spain, Friday, January 2, 2015. (Photo by Andres Kudacki/AP Photo)

A snowman made by children is backdropped by trees covered in snow in a park in Bucharest, Romania, Monday, December 29, 2014. Romania, especially the eastern part, is affected by heavy snow falls and blizzards this year that cause traffic disruptions but are enjoyed by children and mountain tourists. (Photo by Vadim Ghirda/AP Photo)

Belarusian Sergei Selekh plays with his 6-month-old tamed wolves on the outskirts of the village of Gaina, 45 kilometers (28 miles) north of Belarus capital Minsk, Wednesday, December 31, 2014. Selekh owns a farmstead, where sheep, wolves and an ethnographic museum serve as entertainment for guests. (Photo by Sergei Grits/AP Photo)

Indian village women carry bundles of grass on their heads as they walk past a mustard field on the outskirts of Hamirpur, in the northern Indian state of Uttar Pradesh, Wednesday, December 31, 2014. Earlier this year, the Indian government allowed field trial of a variety of genetically modified (GM) mustard, almost 18 months after the previous government ordered a freeze on such tests, according to news reports. (Photo by Rajesh Kumar Singh/AP Photo)

NATO-led International Security Assistance Force (ISAF) soldiers attend a ceremony marking the end of ISAF's combat mission in Afghanistan at ISAF headquarters in Kabul on December 28, 2014. NATO formally ended its war in Afghanistan on December 28, holding a low-key ceremony in Kabul after 13 years of conflict that have left the country in the grip of worsening insurgent violence. The event was arranged in secret due to the threat of Taliban strikes in the Afghan capital, which has been hit by repeated suicide bombings and gun attacks over recent years. “Together... we have lifted the Afghan people out of the darkness of despair and given them hope for the future”, NATO commander US General John Campbell told assembled soldiers. “You've made Afghanistan stronger and our countries safer”. On January 1, the US-led International Security Assistance Force (ISAF) combat mission, which has suffered 3,485 military deaths since 2001, will be replaced by a NATO “training and support” mission. (Photo by Shah Marai/AFP Photo)

Twenty couples attend a group wedding of Han Dynasty (206 BC-220 AD) rituals in Nantong on January 1, 2015 in Jiangsu province, China. (Photo by Feature China/Barcroft Media)

Tim Faulkner (left) general manager of the Australian Reptile Park is helped by Head of Reptiles Billy Collett in restraining a female alligator at the park in New South Wales 30 December 2014 during the annual raiding of the nests to retrieve eggs. The 'gators were busy over Christmas laying eggs. During the day the staff restrained three females to retrieve 60 eggs – with ten nests still to go. (Photo by EPA/HO)

A winding road through the snow near Urbasa, Navarra, Spain, 29 December 2014. Temperatures are to drop in Navarra later this evening, going below freezing. (Photo by Jesus Diges/EPA)

A participant frolics in the snow after taking part in the traditional New Year's swimming in the the Moossee lake with a water temperature of three degrees in Moosseedorf near Bern, Switzerland, 31 December 2014. (Photo by Peter Klaunzer/EPA)

A participants sits with his laptop next to a robot statue built by old ghettoblaster radios at the 31st annual Chaos Communication Congress on December 28, 2014 in Hamburg, Germany. The annual congress is organized by the Chaos Computer Club, Europe's biggest association of computer hackers that has its own code of ethics and in its annual congress seeks to address issues related to society, surveillance, privacy, freedom of information and security. (Photo by Patrick Lux/Getty Images)

Pancake ice formed on the Vistula River, 31 December 2014 in Warsaw, Poland. Pancake ice consists of round pieces of ice that form when surface slush accumulates into floating pads. (Photo by Marcin Obara/EPA)

“Galejadors” fire they muskets during “La Festa del Pi” (The Festival of the Pine) in the village of Centelles on December 30, 2014 in Barcelona, Spain. Early in the morning men and women born in Centelles, who are named “Galejadors” wear their traditional costume with the Catalan red hat known as “Barretina” and carry their shooting muskets as they walk into the forest to chop down a pine tree, load it on an ox cart and take it to the church in the village. There the pine tree is decorated with five bouquets of apples and wafers and hung inside a church until January 6. The tradition has been documented since 1751 and it is believed its origins are related to the trees and the pagan worship of fertilization related the winter solstice. (Photo by David Ramos/Getty Images)

People entertain themselves prior to welcoming in the new year on New Year's Eve on Sydney Harbour on December 31, 2014 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

Fireworks explode behind the Quadriga statue on top of the Brandenburg Gate shortly after midnight on January 1, 2015 in Berlin, Germany. Tens of thousands of revelers gathered in the city center to celebrate New Year's Eve. (Photo by Adam Berry/Getty Images)