75 - The average number of Lego bricks owned by each person on Earth. 5 billion - Hours spent by children around the world playing with Lego each year. 381 million - Number of tyres made by Lego in 2010, making it the world's biggest tyre manufacturer. 485 bilion - Number of pieces of Lego which have been made since the company was started. 4 - Number of Legoland theme parks - in Denmark, Germany, Windsor and California. Â£1.84bn - Lego's sales in 2010, a 32pc increase on the previous year.