Year	Number of
1990	606.65
1991	625.32
1992	640.51
1993	652.94
1994	664.48
1995	668.06
1996	678.42
1997	678.46
1998	682.69
1999	702.14
2000	715
2001	743.21
2002	763.52
2003	788.87
2004	818.59
2005	835.92
2006	860.51
2007	856.9
2008	877.9
2009	897.95
2010	925.74
2011	928.92
2012	952.19
2013	973.74
2014	1029.54
2015	1082.77
2016	1134.49