Year	Number of
1990	367.14
1991	378.19
1992	391.86
1993	408.57
1994	416.8
1995	427.49
1996	441.76
1997	458.7
1998	474.44
1999	491.83
2000	517.23
2001	531.5
2002	546.06
2003	562.55
2004	580.79
2005	602.13
2006	618.77
2007	639.25
2008	653.85
2009	667.4
2010	683.36
2011	705.22
2012	723.44
2013	743.16
2014	762.54
2015	783.69
2016	807.6