Year	Number of
1990	793.61
1991	801.02
1992	824.12
1993	845.12
1994	887.35
1995	958.22
1996	947.58
1997	960
1998	959.33
1999	952.3
2000	960.67
2001	952.2
2002	946.96
2003	935.33
2004	936.49
2005	938.05
2006	947.32
2007	952.95
2008	961.11
2009	970.56
2010	996.6
2011	1015.47
2012	1041.14
2013	1060.92
2014	1083.05
2015	1105.29
2016	1129.34