Year	Number of
1990	829.37
1991	833.27
1992	878.89
1993	862.21
1994	867.2
1995	803.13
1996	777.04
1997	762.56
1998	755.21
1999	765
2000	766.34
2001	772.72
2002	789.9
2003	826.58
2004	838.68
2005	854.13
2006	889.54
2007	924.12
2008	985.95
2009	1022.32
2010	1074.56
2011	1087.38
2012	1120.42
2013	1160.36
2014	1204.28
2015	1258.79
2016	1293.66