Year	Number of
1990	680.72
1991	693.47
1992	705.55
1993	717.87
1994	731.23
1995	747.04
1996	757.18
1997	769.45
1998	786.95
1999	804.42
2000	822.11
2001	836.41
2002	850.73
2003	868.67
2004	888.16
2005	909.8
2006	948.83
2007	990.47
2008	1032.73
2009	1077.34
2010	1125.62
2011	1169.48
2012	1218.15
2013	1266.99
2014	1320.58
2015	1379.25
2016	1450.78