Year	Number of
1990	386.74
1991	383.99
1992	398.52
1993	412.08
1994	443.71
1995	488.23
1996	549.61
1997	610.67
1998	668.11
1999	702.56
2000	735.18
2001	762.02
2002	782.03
2003	805.6
2004	816.59
2005	842.78
2006	857.44
2007	874.55
2008	919.2
2009	950.72
2010	965.2
2011	948.45
2012	972.53
2013	997.73
2014	1016.57
2015	1013.74
2016	1009.34