Year Number 2000 280000 2001 276000 2002 261000 2003 253000 2004 246000 2005 238000 2006 225000 2007 223000 2008 221000 2009 217000 2010 209000 2011 201000 2012 196000 2013 194000 2014 189000 2015 183000 2016 182000 2017 180000 2018 180000 2019 178000 2020 167000