Year	Number of
1990	570.55
1991	597.15
1992	621.76
1993	677.62
1994	716.6
1995	772.76
1996	809.07
1997	834.33
1998	868.3
1999	903.58
2000	934.12
2001	964.62
2002	968.04
2003	985.52
2004	982.44
2005	1006.41
2006	1032.02
2007	1039.98
2008	1056.91
2009	1074
2010	1110.28
2011	1158.23
2012	1199.55
2013	1239.68
2014	1274.23
2015	1307.22
2016	1342.83