Year	Number of
1990	610.58
1991	651.84
1992	701.58
1993	751.48
1994	804.27
1995	850.64
1996	875.19
1997	898.31
1998	916.87
1999	937.03
2000	938.85
2001	955.19
2002	975.33
2003	985.39
2004	1002.49
2005	1018.26
2006	1049.9
2007	1078.95
2008	1109.7
2009	1150.3
2010	1193.42
2011	1227.64
2012	1265.3
2013	1307.08
2014	1354.73
2015	1402.76
2016	1452.46