Year	Number of
1990	2419.03
1991	2481.93
1992	2542.45
1993	2603.25
1994	2677.41
1995	2770.57
1996	2824.84
1997	2884.85
1998	2950.59
1999	3011.17
2000	3072.27
2001	3099.08
2002	3119.32
2003	3143.73
2004	3178.47
2005	3220.72
2006	3256.99
2007	3292.92
2008	3338.01
2009	3391.31
2010	3450.74
2011	3515.3
2012	3588.23
2013	3648.09
2014	3718.17
2015	3789.72
2016	3865.15