Year	Number of
1990	800.99
1991	816.16
1992	835.2
1993	888.66
1994	949.41
1995	986.07
1996	994.62
1997	994.06
1998	1076.21
1999	1080.5
2000	1096.31
2001	1121.41
2002	1146.71
2003	1199.3
2004	1239.63
2005	1263.76
2006	1286.68
2007	1295.4
2008	1308.69
2009	1317.58
2010	1322.64
2011	1327.95
2012	1337.3
2013	1351.78
2014	1365.66
2015	1382.81
2016	1399.59