Year	Number of
1990	1028.67
1991	1014.25
1992	990.02
1993	959.55
1994	930.16
1995	901.44
1996	887.77
1997	890.31
1998	879.61
1999	862.46
2000	841.7
2001	810.36
2002	791.62
2003	776.57
2004	764.46
2005	750.56
2006	732.21
2007	721.87
2008	714.23
2009	708.38
2010	703
2011	709.37
2012	707.13
2013	702.94
2014	701.36
2015	712.73
2016	728.82