Year	Number of
1990	728.48
1991	749.44
1992	747.66
1993	753.06
1994	760.78
1995	779.14
1996	747.69
1997	722.78
1998	698.83
1999	694.14
2000	696.53
2001	689.86
2002	689.47
2003	700.81
2004	753.57
2005	816.74
2006	870.99
2007	874.62
2008	889.97
2009	907.83
2010	929.33
2011	946.33
2012	966.36
2013	989.34
2014	1014.76
2015	1041.1
2016	1067.28