Year Number 1995 32000 1996 29000 1997 21000 1998 19000 1999 14000 2000 18000 2001 16000 2002 18000 2003 21000 2004 69000 2005 67000 2006 63000 2007 70000 2008 73000 2009 60000 2010 64000 2011 75000 2012 89000 2013 95599.9984741211 2014 93900.0015258789 2015 94400.0015258789 2016 121000 2017 145000 2018 160000 2019 174000 2020 29000