Year	Number of
1990	2086.98
1991	2194.79
1992	2302.94
1993	2411.37
1994	2525.22
1995	2648.67
1996	2697.02
1997	2749.74
1998	2803.87
1999	2860.22
2000	2920.82
2001	2953.31
2002	2987.25
2003	3021.98
2004	3058.09
2005	3099.01
2006	3153.17
2007	3204.86
2008	3261.91
2009	3319.78
2010	3381.3
2011	3449.95
2012	3520.07
2013	3591.66
2014	3663.98
2015	3738.24
2016	3816.43