Year	Number of
1990	294.12
1991	314.57
1992	332.6
1993	353.41
1994	374.2
1995	396.48
1996	416.77
1997	435.94
1998	456.97
1999	483.01
2000	513.52
2001	541.82
2002	571.92
2003	606.34
2004	635.37
2005	665.67
2006	694.1
2007	719.95
2008	751.37
2009	780.69
2010	817.16
2011	847.04
2012	871.42
2013	901.69
2014	932.43
2015	963.41
2016	1000.66