Year	Number of
1990	4909.46
1991	5008.12
1992	5098.31
1993	5310.7
1994	5492.24
1995	5702.49
1996	5524.48
1997	5636.57
1998	5729.32
1999	5819.44
2000	5878.82
2001	5916.55
2002	5930.05
2003	5947.32
2004	5960.2
2005	5975.94
2006	5983.29
2007	5999.29
2008	6009.95
2009	6079.56
2010	6153.73
2011	6225.56
2012	6314.5
2013	6431.59
2014	6563.35
2015	6693.73
2016	6829.72