Year	Number of
1990	936.56
1991	963.13
1992	989.15
1993	1018.13
1994	1032.48
1995	1066.01
1996	1077.14
1997	1087.93
1998	1092.97
1999	1086.73
2000	1089.56
2001	1078.94
2002	1107.9
2003	1085.4
2004	1072.89
2005	1047.89
2006	1026.44
2007	1013.24
2008	976.18
2009	953.51
2010	928.91
2011	901.64
2012	891.54
2013	892.29
2014	897.56
2015	918.68
2016	944.12