Year	Number of
1990	837.17
1991	850.69
1992	871.54
1993	888.45
1994	892.13
1995	890.04
1996	872.99
1997	865.03
1998	844.62
1999	832.05
2000	814.86
2001	802.65
2002	815.38
2003	819.08
2004	838.96
2005	863.28
2006	877.73
2007	911.87
2008	940
2009	970.56
2010	1001.08
2011	1028.63
2012	1057.8
2013	1087.08
2014	1119.87
2015	1152.2
2016	1180.82