Year Number of 2000 91000 2001 89000 2002 85000 2003 79000 2004 72000 2005 68000 2006 64000 2007 61000 2008 62000 2009 61000 2010 56000 2011 54000 2012 47000 2013 46000 2014 41000 2015 36000 2016 33000 2017 32000 2018 25000 2019 22000 2020 21000