Year	Number of
1990	1024.45
1991	1005.65
1992	990.6
1993	990.46
1994	971.85
1995	942.19
1996	913.53
1997	877.52
1998	841.69
1999	818.59
2000	793.09
2001	776.95
2002	762.33
2003	743.7
2004	732.09
2005	715.81
2006	707.81
2007	702.89
2008	699.5
2009	702.88
2010	701.01
2011	699.59
2012	700.61
2013	692.36
2014	681.96
2015	677.65
2016	692.04