Year	Number of
1990	1564.54
1991	1613.49
1992	1665.07
1993	1712.08
1994	1737.84
1995	1789.18
1996	1819.69
1997	1846.39
1998	1848.82
1999	1830.18
2000	1829.28
2001	1823.79
2002	1874.69
2003	1861.19
2004	1869
2005	1853.4
2006	1852.62
2007	1876.93
2008	1842.35
2009	1856.02
2010	1858.5
2011	1865.52
2012	1900.29
2013	1963.26
2014	2027.08
2015	2131.69
2016	2238.95