Year	Number of
1990	760.25
1991	807.15
1992	851.81
1993	879.3
1994	887.68
1995	854.73
1996	841.91
1997	825.51
1998	821.8
1999	840.67
2000	833.65
2001	844.64
2002	844.73
2003	856.08
2004	878.98
2005	923.42
2006	964.62
2007	951.15
2008	979.03
2009	976.99
2010	951.58
2011	943.45
2012	922.06
2013	894.21
2014	909
2015	938.28
2016	932.73