Year	Number of
1990	768.75
1991	779.76
1992	795.42
1993	808.45
1994	801.1
1995	799.69
1996	787.46
1997	798.61
1998	809.71
1999	814.79
2000	818.99
2001	829.4
2002	832.42
2003	813.69
2004	805.92
2005	802.49
2006	803.65
2007	811.68
2008	819.59
2009	823.53
2010	834.74
2011	840.64
2012	848.02
2013	847.05
2014	844.87
2015	858.53
2016	877.84