Year	Number of
1990	2077.9
1991	2139.84
1992	2203.68
1993	2318.75
1994	2385.16
1995	2482.71
1996	2554.09
1997	2576.86
1998	2633.49
1999	2663.86
2000	2701.51
2001	2751.35
2002	2815.86
2003	2890.07
2004	2931.28
2005	3020.64
2006	3064.87
2007	3072.3
2008	3080.12
2009	3106.1
2010	3149.06
2011	3137.81
2012	3130.02
2013	3123.59
2014	3057.39
2015	3031.48
2016	3015.25