Year	Number of
1990	2090.71
1991	2023.02
1992	1972.54
1993	1954.81
1994	1932.74
1995	1912.41
1996	1866.2
1997	1830.06
1998	1825.33
1999	1799.8
2000	1764.53
2001	1732.65
2002	1716.41
2003	1695.7
2004	1664.62
2005	1669.07
2006	1675.48
2007	1666.33
2008	1691.56
2009	1705.73
2010	1739.29
2011	1760.32
2012	1776.65
2013	1762.38
2014	1716.21
2015	1702.79
2016	1692.27