Year	Number of
1990	5078.87
1991	5128.26
1992	5217.56
1993	5245.77
1994	5269.42
1995	5267.72
1996	5260.95
1997	5308.48
1998	5371.48
1999	5465.05
2000	5565.77
2001	5588.39
2002	5675.79
2003	5734.77
2004	5809.26
2005	5905.92
2006	5998.98
2007	6126.3
2008	6242.36
2009	6354.12
2010	6456.53
2011	6576.6
2012	6674.31
2013	6736.55
2014	6812.79
2015	6902.66
2016	7025.46