Year	Number of
1990	634.74
1991	649.74
1992	672.41
1993	682.74
1994	699.7
1995	722.52
1996	746.73
1997	766.16
1998	765.67
1999	768.43
2000	785.01
2001	802.19
2002	814.39
2003	827.89
2004	846.16
2005	871.51
2006	890.94
2007	905.44
2008	919.48
2009	924.01
2010	931.8
2011	954.31
2012	968.61
2013	987.02
2014	984.44
2015	991.95
2016	1000.03