Year	Number of
1990	773.16
1991	809.56
1992	850.2
1993	865.31
1994	905.77
1995	957.42
1996	1016.01
1997	1106.58
1998	1127.26
1999	1166.66
2000	1222.08
2001	1231.4
2002	1267.5
2003	1315.6
2004	1356.13
2005	1389.38
2006	1449.4
2007	1488.02
2008	1526.23
2009	1584.8
2010	1637.15
2011	1671.07
2012	1686.1
2013	1688.27
2014	1701.89
2015	1713.65
2016	1722.93