Year Number 2000 444000 2001 437000 2002 422000 2003 408000 2004 402000 2005 392000 2006 375000 2007 372000 2008 368000 2009 361000 2010 349000 2011 340000 2012 330000 2013 325000 2014 318000 2015 310000 2016 305000 2017 301000 2018 297000 2019 293000 2020 283000