Year	Number of
1990	626.39
1991	656.19
1992	688.69
1993	725
1994	763.57
1995	804.46
1996	847.01
1997	891.8
1998	941.56
1999	994.74
2000	1052.02
2001	1100.67
2002	1152.19
2003	1210.81
2004	1271.72
2005	1334.95
2006	1394.37
2007	1456.06
2008	1525.69
2009	1598.68
2010	1675.69
2011	1746.06
2012	1820.15
2013	1899.99
2014	1984.23
2015	2072.84
2016	2161.74