Year	Number of
1990	5281.87
1991	5354.1
1992	5412.08
1993	5467.86
1994	5518.2
1995	5581.34
1996	5618.77
1997	5696.55
1998	5773.53
1999	5849.15
2000	5928.3
2001	6039.07
2002	6172.71
2003	6273.64
2004	6395.57
2005	6519.21
2006	6609.03
2007	6705.08
2008	6841.17
2009	7000.28
2010	7190.29
2011	7374.12
2012	7585.31
2013	7824.48
2014	8065.27
2015	8345.76
2016	8644.63