Year	Number of
1990	1703.49
1991	1744.84
1992	1855.34
1993	1831.6
1994	1929.73
1995	1908.76
1996	2049.06
1997	2329.07
1998	2431.67
1999	2573.78
2000	2782.17
2001	2805.21
2002	2891.66
2003	3009.55
2004	3127.02
2005	3252.5
2006	3364.18
2007	3393.6
2008	3392.24
2009	3458.88
2010	3569.9
2011	3607.61
2012	3569.4
2013	3607.51
2014	3713.23
2015	3788.35
2016	3834.86