Question: How many people climbed Paris' tallest structure in 2011?
About the article "Eiffel Tower", section "Abstract".

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Robert has climbed landmarks including the Eiffel Tower, the Sydney Opera House and the Montparnasse Tower as well as the world's tallest skyscrapers.
In 1997 he climbed the Petronas Twin Towers in Kuala Lumpur, Malaysia but was arrested at the 60th floor, 28 floors below the top.
In 1999 he climbed the Sears Tower, the second man to do so after Dan Goodwin.
In June 1999 Robert climbed the Marriott Hotel in Warsaw, and in 2000 he climbed the high Luxor Obelisk in Paris.
In February 2003, he legally climbed the National Bank of Abu Dhabi, UAE, watched by about 100,000 spectators.
It became more frequent for Robert to be paid to scale buildings as part of publicity efforts.
In May 2003, he was paid approximately $18,000 to climb the Lloyd's building to promote the premiere of the movie "Spider-Man" on the British television channel "Sky Movies".
On 19 October 2004, he scaled the headquarters of the French oil company Total while wearing a Spider-Man costume.
Robert scaled Taipei 101 on 25 December 2004, a few days before its grand opening as the tallest building in the world.
The climb was legal, part of the week's festivities.
The skyscraper's outwardly slanting sides posed no apparent difficulty for him, but heavy rain resulted in a climb lasting four hours—double his estimate.
On 11 June 2005 he climbed the Cheung Kong Centre in Hong Kong, scaling to reach the top of the 62-story tower.
On 1 September 2006, he climbed the tallest building in Lithuania and the Baltic States – Europa Tower () in Vilnius.
Wearing a black suit and using a safety rope, which he detached several times, he reached the observation deck of the building, , in 40 minutes.
In 2006 he also climbed Torre Vasco da Gama in Portugal as part of an advertisement for Optimus, a national mobile operator.
He finished the year climbing the Santa Fe World Plaza in Mexico City on 7 December 2006.
On 23 February 2007, he legally climbed the headquarters building of Abu Dhabi Investment Authority (ADIA) on the coast of Abu Dhabi.
On 20 March 2007, he again climbed the Petronas Twin Towers, marking the tenth anniversary of his previous ascent of this building.
Upon reaching the 60th floor, he allowed himself to be apprehended.
He flew the Malaysian flag and drew applause from waiting police, fire crew, and media representatives before handing himself in.
He was handcuffed and escorted off the premises before being driven to a police station.
On 31 May 2007, he scaled the 88-story Jin Mao Building in Shanghai—China's then tallest building, once again wearing a Spider-Man costume.
He was later arrested and jailed for five days before being expelled from China.
In November 2007, Robert was invited by the local government of Zhangjiajie, a scenic region in the southern province of Hunan, to climb the Tianmen mountain to boost the profile of the region and bring in tourists.
On 4 September 2007, he climbed the Federation Tower office building in Moscow, (Russia's tallest skyscraper).
He was detained by police afterwards.
On 18 December 2007, he climbed the 29-story Portland House office building in London (Westminster's tallest building).
It took him just over 40 minutes.
Police taped off the area and later arrested him for criminal damage and wasting police time.
On 15 April 2008, he climbed the 60-story Four Seasons Place in Hong Kong.
The police and four fire engines were standing by and it took him almost 1 hour to reach the top.
He stated that his climb was intended to increase awareness of global warming.
On 5 June 2008, he climbed the New York Times Building in New York City.
He unfurled a banner with a slogan about global warming and was then arrested by police on the roof.
The banner read "Global warming kills more people than 9/11 every week.
"On 17 February 2009, he once again climbed the Cheung Kong Centre in Hong Kong, taking 40 minutes to reach the top of the 62-story tower.
He unfurled a banner reading "onehundredmonths.org" while climbing.
On 2 April 2009, during the 2009 G-20 London summit he climbed to the 9th floor of the Lloyd's building and unfurled a 100-foot banner declaring that there were 100 months left to save the planet.
On 2 June 2009, he climbed to the 41st floor of the RBS Tower in Sydney Australia before returning to the ground; he was arrested as he finished his descent.
On 1 September 2009, one day after Malaysia celebrated its 52nd "Independence Day" and after two arrests in 1997 and 2007, Alain Robert finally made it successfully to the top of the Petronas Twin Towers.
He started at 6:00 am local time and reached the top at 7:40 am local time without attracting the attention of the public.
He celebrated his climb by standing with his arms outspread on the pinnacle of one of the Twin Towers.
He was later fined RM2000 in default of two months jail at the Kuala Lumpur magistrate's court after he pleaded guilty to criminal trespass for scaling the Petronas Twin Towers.
On 28 March 2011 Robert climbed the tallest building in the world, the 828-meter Burj Khalifa tower in Dubai, taking just over six hours to complete the climb.
However, he used a harness in accordance with safety procedure.
On 4 September 2011 he legally climbed the 240-meter tall central tower of Moscow State University, during 2-hour 4D show by David Atkins, in which the university was used as a projection screen.
On 14 October 2011, he climbed the InterContinental Bucharest in Romania.
On 12 April 2012, he set a Guinness World Record for climbing the 300m-high Aspire Tower in Doha, Qatar in the fastest time (1 hour, 33 minutes and 47 seconds)On 21 June 2012, he legally climbed the 110-metre high Mauritius Telecom tower in Mauritius as part of an advertising campaign for the launching of 4G cellular technology by the telecommunications operator.
He was aided by safety ropes, harnesses and suction cups.
In November 2012, Robert was spotted inside The Shard in London.
The building's owners subsequently got an injunction preventing Robert from ever returning.
On 27 March 2014, he climbed the Ariane tower in 45 minutes.
Onlookers and police gathered to watch his climb.
He was arrested by police and later released without being charged. 
This is a list of buildings that once held the title of tallest building in Tokyo.
It should be noted that since its completion in 2011, Tokyo Skytree has been the tallest structure in Tokyo as well as in Japan, overtaking Tokyo Tower. 
 Tallest tower in Southwest Asia World's 4th tallest freestanding telecommunication tower upon completion World's 7th tallest tower World's 17th tallest freestanding structure  
This list of tallest buildings in Saudi Arabia ranks skyscrapers in Saudi Arabia by height.
The tallest building in Saudi Arabia is currently the 120–story Makkah Royal Clock Tower Hotel, which rises and was topped out in 2012, it is also the worlds 2nd tallest building.
In August 2011, the Kingdom Tower was approved for construction, when completed in 2018 it will rise to , therefore becoming both the world's tallest building and structure.  
The Eiffel Tower (, ) is an iron lattice tower located on the Champ de Mars in Paris.
It was named after the engineer Gustave Eiffel, whose company designed and built the tower.
Erected in 1889 as the entrance arch to the 1889 World's Fair, it was initially criticised by some of France's leading artists and intellectuals for its design, but has become both a global cultural icon of France and one of the most recognizable structures in the world.
The tower is the tallest structure in Paris and the most-visited paid monument in the world; 6.98 million people ascended it in 2011.
The tower received its 250 millionth visitor in 2010.
The tower is tall, about the same height as an 81- building.
During its construction, the Eiffel Tower surpassed the Washington Monument to assume the title of the tallest man-made structure in the world, a title it held for 41 years, until the Chrysler Building in New York City was built in 1930.
Because of the addition of the antenna atop the Eiffel Tower in 1957, it is now taller than the Chrysler Building by .
Not including broadcast antennae, it is the second-tallest structure in France, after the Millau Viaduct.
The tower has three levels for visitors, with restaurants on the first and second.
The third level observatory's upper platform is above the ground, the highest accessible to the public in the European Union.
Tickets can be purchased to ascend by stairs or lift (elevator) to the first and second levels.
The climb from ground level to the first level is over 300 steps, as is the walk from the first to the second level.
Although there are stairs to the third and highest level, these are usually closed to the public and it is generally only accessible by lift.