Year	Number of
1990	1291.69
1991	1254.38
1992	1202.41
1993	1161.49
1994	1134.83
1995	1106.28
1996	1078.02
1997	1033.15
1998	1000.3
1999	970.6
2000	949.94
2001	931.36
2002	918.16
2003	914.58
2004	892.19
2005	870.12
2006	857.99
2007	837.94
2008	827.04
2009	832.12
2010	817.62
2011	803.63
2012	793.73
2013	785.66
2014	770.92
2015	749.34
2016	758.5