Year	Number of
1990	917.16
1991	956.96
1992	1012.97
1993	1072.76
1994	1121.33
1995	1165.82
1996	1146.16
1997	1119.51
1998	1074.53
1999	1009.08
2000	1026.85
2001	1014.86
2002	1004.91
2003	1004.89
2004	1004.15
2005	1008.13
2006	1018.27
2007	1049.55
2008	1080.07
2009	1121.18
2010	1157.24
2011	1185.91
2012	1205.43
2013	1208.58
2014	1211.82
2015	1230.1
2016	1252.81