Year	Number of
1990	1631.56
1991	1672.53
1992	1752.53
1993	1826.39
1994	1877.05
1995	1962.9
1996	2014.29
1997	2077.38
1998	2125.51
1999	2156.3
2000	2208.1
2001	2261.77
2002	2335.8
2003	2418.83
2004	2469.53
2005	2552.96
2006	2605.67
2007	2638.22
2008	2752.65
2009	2877.18
2010	2915.77
2011	2964.14
2012	3059.35
2013	3214.17
2014	3318.37
2015	3385.76
2016	3526.73