Year	Number of
1990	695.03
1991	731.88
1992	771.74
1993	814.73
1994	862.53
1995	923.7
1996	971.6
1997	1024.31
1998	1082.35
1999	1146.19
2000	1218.62
2001	1267.72
2002	1319.72
2003	1376.1
2004	1435.22
2005	1497.55
2006	1585.9
2007	1680.8
2008	1782.8
2009	1892.05
2010	2010.26
2011	2090.46
2012	2174.95
2013	2262.14
2014	2353.34
2015	2448.32
2016	2544.8