Year	Number of
1990	1600.3
1991	1639.77
1992	1681.91
1993	1726.67
1994	1774.26
1995	1825.67
1996	1847.71
1997	1872.16
1998	1898.28
1999	1926.7
2000	1958.3
2001	1966.15
2002	1976.23
2003	1988.15
2004	2002.67
2005	2020.83
2006	2021.26
2007	2023.44
2008	2029.43
2009	2037.7
2010	2048.93
2011	2105.17
2012	2164.59
2013	2225.25
2014	2289.78
2015	2358.78
2016	2435.55