Year	Number of
1990	338.46
1991	354.26
1992	370.08
1993	387.26
1994	404.87
1995	423.28
1996	439.81
1997	456.57
1998	476.09
1999	496.43
2000	518.35
2001	531.69
2002	547.21
2003	564.87
2004	583.19
2005	602.41
2006	620.71
2007	638.7
2008	656.64
2009	676.21
2010	698.53
2011	728.71
2012	762.8
2013	797.85
2014	839.63
2015	885.46
2016	941.04