Year	Number of
1990	858.25
1991	857.39
1992	868.28
1993	862.16
1994	841.91
1995	836.63
1996	824.36
1997	806.06
1998	791.75
1999	792.22
2000	814.16
2001	834.42
2002	846.96
2003	858.08
2004	880.39
2005	892.53
2006	884.14
2007	871.58
2008	863.07
2009	856.39
2010	851.93
2011	867.56
2012	861.05
2013	870.46
2014	882.52
2015	880.79
2016	879.93