Year Number 1995 233000 1996 226000 1997 259000 1998 278000 1999 278000 2000 300000 2001 270000 2002 263000 2003 235000 2004 250000 2005 286000 2006 313000 2007 328000 2008 324000 2009 265000 2010 279000 2011 295000 2012 292000 2013 328000 2014 329000 2015 331000 2016 336000 2017 355000 2018 347000 2019 363000 2020 159000