Year	Number of
1990	4979.48
1991	5159.35
1992	5347.4
1993	5526.79
1994	5712.3
1995	5913.48
1996	6111.68
1997	6321.89
1998	6546.64
1999	6778.31
2000	7024.85
2001	7182.7
2002	7327.39
2003	7468.02
2004	7611.11
2005	7766.69
2006	7910.16
2007	8069.57
2008	8231.84
2009	8397.64
2010	8579.72
2011	8851.49
2012	9109.66
2013	9367.29
2014	9624.41
2015	9881.04
2016	10139.39