Copenhagen's metro was used by 50 million passengers in 2009, with its 12,000 daily services achieving a 98.6% punctuality rate. It was recognized as the World and Europe's Best Metro by industry experts in 2008 and the Best Driverless Metro in 2009. The two-line, 20.5km system serves Copenhagen city centre as well as the municipalities of Fredericksberg, and Tårnby, and Copenhagen Airport.