Year	Number of
1990	2705.96
1991	2805.88
1992	2910.57
1993	3031.34
1994	3158.76
1995	3294.46
1996	3344.92
1997	3423.27
1998	3471.64
1999	3552.63
2000	3694.25
2001	3781.7
2002	3904.92
2003	4052.52
2004	4222.22
2005	4406.13
2006	4616.66
2007	4809.25
2008	5048.14
2009	5318.57
2010	5582.13
2011	5797.74
2012	6022.91
2013	6258.57
2014	6502.32
2015	6744.01
2016	7020.13