Year	Number of
1990	1595.86
1991	1704.72
1992	1766.53
1993	1805.41
1994	1833.72
1995	1873.94
1996	1925.68
1997	1919.81
1998	1924.21
1999	2015.68
2000	2076.44
2001	2140.16
2002	2227.96
2003	2203.53
2004	2309.05
2005	2331.41
2006	2423.04
2007	2398.69
2008	2460.36
2009	2540.76
2010	2534.71
2011	2503.58
2012	2542.91
2013	2585.16
2014	2607.91
2015	2655.99
2016	2708.13