Year	Number of
1990	2011.64
1991	2122.55
1992	2219.69
1993	2287.28
1994	2378.71
1995	2472.6
1996	2496.1
1997	2509.88
1998	2508.07
1999	2619.66
2000	2734.07
2001	2799.02
2002	2906.82
2003	3014.4
2004	3151.18
2005	3325.37
2006	3383.06
2007	3531.31
2008	3616.13
2009	3521.72
2010	3517.87
2011	3537.02
2012	3640.99
2013	3638.93
2014	3687.85
2015	3714.16
2016	3787.94