Year Number 1995 4800.00019073486 1996 5199.99980926514 1997 5400.00009536743 1998 6199.99980926514 1999 7199.99980926514 2000 7599.99990463257 2001 6400.00009536743 2002 5599.99990463257 2003 6300.00019073486 2004 9199.99980926514 2005 13600.0003814697 2006 17299.9992370605 2007 21000 2008 28000 2009 23000 2010 41000 2011 66000 2012 105000 2013 116000 2014 133000 2015 155000 2016 210000 2017 255000 2018 274000 2019 316000 2020 29799.9992370605