Year	Number of
1990	663.06
1991	675.67
1992	690.63
1993	704.18
1994	724.66
1995	749.13
1996	774.25
1997	795.35
1998	822.92
1999	860.39
2000	889.1
2001	915.39
2002	944.88
2003	984.22
2004	1018.48
2005	1050.65
2006	1081.45
2007	1110.64
2008	1138.76
2009	1173.63
2010	1210.16
2011	1230.79
2012	1246.15
2013	1246.02
2014	1257.22
2015	1263.97
2016	1278.12