Year	Number of
1990	740.11
1991	753.01
1992	759.59
1993	791.95
1994	799.92
1995	801.91
1996	793.91
1997	781.82
1998	793.47
1999	813.18
2000	814.83
2001	840.68
2002	867.89
2003	890.59
2004	918.39
2005	939.48
2006	957.39
2007	975.2
2008	994.31
2009	1013.77
2010	1031.16
2011	1058.63
2012	1090.07
2013	1125.4
2014	1166.22
2015	1212.81
2016	1249.64