Year	Number of
1990	1437.26
1991	1200.52
1992	1417.14
1993	1526.02
1994	1650.11
1995	1726.03
1996	1776.99
1997	1778.91
1998	1785
1999	1789.76
2000	1804.81
2001	1815.8
2002	1841.99
2003	1932.89
2004	2073.74
2005	2178.37
2006	2243.87
2007	2251.07
2008	2212.94
2009	2180.44
2010	2117.56
2011	2076.81
2012	2020.07
2013	1887.45
2014	1822.97
2015	1795.93
2016	1824.44