Year	Number of
1990	1252.12
1991	1290.39
1992	1331.99
1993	1375.97
1994	1423.95
1995	1476.3
1996	1526.03
1997	1580.8
1998	1637.15
1999	1694.45
2000	1755.33
2001	1789.28
2002	1828.57
2003	1870.99
2004	1916.47
2005	1964.79
2006	2008.79
2007	2056.84
2008	2109.34
2009	2166.12
2010	2226.32
2011	2272.31
2012	2323.46
2013	2376.15
2014	2432.47
2015	2487.52
2016	2543.19