Year Number 2003 7213000 2004 6643000 2005 6963000 2006 6393000 2007 9048000 2008 9665000 2009 8904000 2010 8673000 2011 5279000 2012 5419000 2013 5781000 2014 5651000 2015 5856000 2016 6027000 2017 6775000 2018 7390000 2019 7346000 2020 2399000