Year	Number of
1990	40229.45
1991	41516.91
1992	42921.12
1993	44437.64
1994	46057.77
1995	47804.54
1996	49542.17
1997	51393.37
1998	53359.77
1999	55437.99
2000	57668.41
2001	59397.96
2002	61261.76
2003	63258.11
2004	65368.08
2005	67617.56
2006	70805.55
2007	74181.19
2008	77845.82
2009	81747.74
2010	85910.89
2011	90329.91
2012	95046.04
2013	100018.66
2014	105045.78
2015	110372.27
2016	115922.44