Year	Number of
1990	682.17
1991	704.48
1992	730.45
1993	772.05
1994	810.54
1995	833.9
1996	841.12
1997	836.82
1998	799.22
1999	797.61
2000	795.9
2001	809.87
2002	812.44
2003	841.93
2004	887.64
2005	914.81
2006	937.13
2007	942.71
2008	919.63
2009	910.93
2010	908.79
2011	910.92
2012	910.7
2013	883.03
2014	856.42
2015	843.35
2016	869.01