Year	Number of
1990	509.42
1991	520.76
1992	538.4
1993	561.34
1994	586.72
1995	613.64
1996	633.99
1997	654.31
1998	675.48
1999	697.95
2000	722.69
2001	745.81
2002	771.12
2003	798.59
2004	827.41
2005	857.87
2006	883.9
2007	910.41
2008	939.26
2009	969.53
2010	1002.09
2011	1029.78
2012	1059.66
2013	1090.57
2014	1123.02
2015	1156.97
2016	1192.42