Year	Number of
1990	895.04
1991	940.06
1992	974.59
1993	999.19
1994	1023.49
1995	1030.76
1996	1052.86
1997	1059
1998	1065.33
1999	1092.53
2000	1109.34
2001	1134.87
2002	1164.25
2003	1199.78
2004	1239.82
2005	1277.84
2006	1312.41
2007	1337.89
2008	1350.13
2009	1381.66
2010	1406.92
2011	1428.59
2012	1467.34
2013	1480.57
2014	1509.23
2015	1529.96
2016	1556.16