Year	Number of
1990	340.2
1991	358.24
1992	376.21
1993	395.34
1994	416.64
1995	439.24
1996	461.8
1997	485.91
1998	513.08
1999	543.95
2000	574.5
2001	596.47
2002	620.34
2003	646.71
2004	679.98
2005	709.72
2006	740.92
2007	756.79
2008	788.9
2009	827.16
2010	865.15
2011	911.55
2012	941.66
2013	972.73
2014	1005.37
2015	1039.87
2016	1076.72