Year	Number of
1990	631.6
1991	649.4
1992	670.12
1993	695.26
1994	717.77
1995	740.24
1996	762.14
1997	785.97
1998	807.19
1999	794.39
2000	791.37
2001	776.25
2002	767.38
2003	769.34
2004	773.36
2005	779.55
2006	787.02
2007	797.05
2008	808.36
2009	819.31
2010	847.95
2011	858.64
2012	909.29
2013	947.95
2014	980.32
2015	1011.12
2016	1041.15