Year	Number of
1990	647.25
1991	689.76
1992	735.68
1993	785.75
1994	839.31
1995	896.81
1996	933.17
1997	970.81
1998	1011.89
1999	1054.95
2000	1100.4
2001	1149.11
2002	1200.28
2003	1256.1
2004	1314.74
2005	1376.48
2006	1463.92
2007	1557.02
2008	1658.64
2009	1767.12
2010	1883.26
2011	1988.94
2012	2100.66
2013	2220.27
2014	2346.57
2015	2480.06
2016	2619.35