Year	Number of
1990	9079.93
1991	9373.95
1992	9612.94
1993	9824.41
1994	9958.36
1995	10141.73
1996	10220.17
1997	10232.89
1998	10264.57
1999	10301.88
2000	10352.87
2001	10533.83
2002	10651.58
2003	10732.7
2004	10778.12
2005	10859.97
2006	10915.27
2007	11009.15
2008	11101.01
2009	11235.81
2010	11503.66
2011	11783.25
2012	12101.46
2013	12419.33
2014	12832
2015	13245.87
2016	13636.33