Year	Number of
1990	2884.48
1991	2944.81
1992	3004.08
1993	3064.23
1994	3132.75
1995	3211.88
1996	3252.09
1997	3295.66
1998	3345.81
1999	3392.12
2000	3440.63
2001	3476.75
2002	3506
2003	3534.47
2004	3572.5
2005	3612.57
2006	3628.28
2007	3644.14
2008	3661.4
2009	3681.27
2010	3701.52
2011	3711.19
2012	3718.58
2013	3720.43
2014	3727.1
2015	3739.99
2016	3754.38