Year	Number of
1990	1724.27
1991	1757.41
1992	1768.29
1993	1793.89
1994	1807.94
1995	1795.25
1996	1842.93
1997	1845.66
1998	1843.76
1999	1847.2
2000	1835.34
2001	1847.21
2002	1843.38
2003	1831.07
2004	1832.6
2005	1830.95
2006	1840.35
2007	1864.66
2008	1875.25
2009	1885.32
2010	1903.96
2011	1914.75
2012	1950.6
2013	1957.04
2014	1966.41
2015	1983.25
2016	1986.11