Year	Number of
1990	1660.11
1991	1671.86
1992	1667.71
1993	1675.57
1994	1677.22
1995	1688.33
1996	1689.79
1997	1673.8
1998	1687.09
1999	1706.92
2000	1718
2001	1715.19
2002	1709.11
2003	1711.15
2004	1747.63
2005	1725.25
2006	1698.09
2007	1690.4
2008	1685.07
2009	1650.32
2010	1620.17
2011	1615.71
2012	1652.23
2013	1663.23
2014	1660.3
2015	1695.45
2016	1716.97