Year	Number of
1990	1606.04
1991	1662.07
1992	1722.35
1993	1786.52
1994	1855.47
1995	1929.87
1996	1974.13
1997	2021.53
1998	2072.98
1999	2123.97
2000	2174.96
2001	2227.42
2002	2281.28
2003	2346.21
2004	2415.37
2005	2491.02
2006	2545.31
2007	2604.42
2008	2673.86
2009	2747.63
2010	2826.14
2011	2918.89
2012	3016.88
2013	3118.3
2014	3228.11
2015	3347.91
2016	3467.02