Year	Number of
1990	712.13
1991	711.35
1992	717.55
1993	729.26
1994	739.78
1995	763.19
1996	783.73
1997	822.12
1998	823
1999	826.42
2000	839.38
2001	829.77
2002	828.43
2003	821.84
2004	818.78
2005	822.41
2006	832.05
2007	842.31
2008	842.55
2009	850.75
2010	874.91
2011	884.13
2012	903.08
2013	906.98
2014	913.75
2015	942.06
2016	964.06