Year	Number of
1990	2408.92
1991	2430.38
1992	2493.04
1993	2548.16
1994	2625.78
1995	2745.74
1996	2840.11
1997	2854.13
1998	2859.7
1999	2840.96
2000	2872.36
2001	2964.67
2002	3019.75
2003	3039.29
2004	2987.63
2005	3050.76
2006	3026.72
2007	3018.6
2008	3086.59
2009	3156.55
2010	3130.25
2011	2996.8
2012	3044.01
2013	3112.45
2014	3147.17
2015	3096.72
2016	3053.96