Year	Number of
1990	823.71
1991	887.94
1992	958.5
1993	1032.9
1994	1107.1
1995	1188.02
1996	1245.58
1997	1309.43
1998	1380.15
1999	1449.41
2000	1517.49
2001	1680.76
2002	1867.75
2003	2059.94
2004	2264.72
2005	2486.24
2006	2579.09
2007	2667.89
2008	2755.44
2009	2848.29
2010	2945.96
2011	2950.48
2012	2959.4
2013	2970.4
2014	2991.78
2015	3013.86
2016	3038.07