Year	Number of
1990	2973.04
1991	3082.45
1992	3200.73
1993	3327.38
1994	3463.27
1995	3611.96
1996	3643.65
1997	3682.37
1998	3725.83
1999	3774.91
2000	3832.63
2001	3782.58
2002	3739.72
2003	3701.8
2004	3669.61
2005	3645.87
2006	3621.68
2007	3600.04
2008	3586.04
2009	3575.93
2010	3572.2
2011	3622.32
2012	3677.7
2013	3735.19
2014	3797.33
2015	3864.99
2016	3933.52