Year	Number of
1990	442.13
1991	465.42
1992	483.06
1993	499.4
1994	527.71
1995	538.01
1996	557.94
1997	584.08
1998	615.13
1999	654.56
2000	695.34
2001	728.19
2002	760.6
2003	795.82
2004	824.66
2005	851.67
2006	871.57
2007	889.56
2008	896.22
2009	917.95
2010	942.85
2011	943.1
2012	948.44
2013	953.5
2014	968.04
2015	991.22
2016	1010.08