Year	Number of
1990	1025.98
1991	1000.73
1992	965.41
1993	940.25
1994	915.45
1995	903.28
1996	891.53
1997	872.78
1998	846.66
1999	823.83
2000	788.32
2001	768.39
2002	747.5
2003	733.01
2004	723.81
2005	708.59
2006	687.74
2007	679.14
2008	669.08
2009	659.18
2010	652.92
2011	666.7
2012	673.55
2013	682.51
2014	687.32
2015	707.17
2016	731.15