Year	Number of
1990	562.06
1991	582.52
1992	599.83
1993	613.12
1994	631.45
1995	656.82
1996	695.05
1997	669.96
1998	685.01
1999	682.11
2000	687.8
2001	711.96
2002	719.63
2003	743.54
2004	751.85
2005	762.63
2006	784.28
2007	808.22
2008	834.58
2009	856.69
2010	876.41
2011	900.84
2012	932.49
2013	955.83
2014	984.98
2015	1017.93
2016	1050.13