Year	Number of
1990	2811.89
1991	2876.03
1992	2939.12
1993	3007.61
1994	3092.93
1995	3111.71
1996	3171.18
1997	3183.21
1998	3227.89
1999	3275.96
2000	3283.78
2001	3256.11
2002	3278.25
2003	3344.83
2004	3364.24
2005	3452.75
2006	3569.54
2007	3638.4
2008	3651.51
2009	3736.86
2010	3696.43
2011	3708.55
2012	3729.27
2013	3746.16
2014	3789.44
2015	3832.84
2016	3875.66