Year Number 2000 183000 2001 180000 2002 179000 2003 175000 2004 171000 2005 169000 2006 165000 2007 165000 2008 163000 2009 160000 2010 156000 2011 152000 2012 146000 2013 143000 2014 140000 2015 138000 2016 133000 2017 131000 2018 128000 2019 126000 2020 125000