Year	Number of
1990	33883.11
1991	33882.27
1992	33993.57
1993	34412.26
1994	34644.27
1995	34914.26
1996	34862.47
1997	34741.38
1998	34987.34
1999	35416.34
2000	35375.65
2001	35305.16
2002	35237.57
2003	35002.51
2004	34568.33
2005	34274.94
2006	34060.22
2007	33948.18
2008	33937.89
2009	33800.97
2010	33902.79
2011	34125.36
2012	34390.91
2013	34813.92
2014	35355.49
2015	36303.73
2016	37085.33