Year	Number of
1990	718.13
1991	752.97
1992	794.61
1993	830.71
1994	873.43
1995	915.67
1996	933.38
1997	978.46
1998	999.82
1999	1030.45
2000	1063.24
2001	1101.02
2002	1135.96
2003	1171.91
2004	1216.65
2005	1246.45
2006	1278.09
2007	1297.63
2008	1347.56
2009	1403.79
2010	1461.5
2011	1521.14
2012	1588.34
2013	1653.56
2014	1714.8
2015	1781.06
2016	1844.85