Year	Number of
1990	786.81
1991	806.68
1992	824.67
1993	839.32
1994	856.02
1995	883.54
1996	904.75
1997	945.87
1998	991.02
1999	1015.78
2000	1033.81
2001	1043.07
2002	1052.64
2003	1067.17
2004	1079.36
2005	1105.25
2006	1118.85
2007	1136.09
2008	1148.44
2009	1157.63
2010	1167.99
2011	1173.67
2012	1186.96
2013	1199.04
2014	1206.18
2015	1225.4
2016	1248.33