Year	Number of
1990	701.27
1991	728.66
1992	788.79
1993	852.34
1994	920.25
1995	998.56
1996	1014.59
1997	1041.56
1998	1064.54
1999	1108.18
2000	1147.12
2001	1193.27
2002	1266.89
2003	1344.74
2004	1431.87
2005	1561.96
2006	1653.16
2007	1701.36
2008	1763.93
2009	1836.8
2010	1910.14
2011	1978.49
2012	2057.56
2013	2146.1
2014	2238.71
2015	2320.95
2016	2392.25