Year	Number of
1990	967.25
1991	986.79
1992	1000.2
1993	1001.32
1994	1016.32
1995	1010.65
1996	1007.03
1997	994.85
1998	985.75
1999	982.65
2000	984.3
2001	999.04
2002	1012.02
2003	1016.42
2004	1033.41
2005	1020.23
2006	1008.02
2007	1006.58
2008	1031.1
2009	1041.32
2010	1045.29
2011	1074.63
2012	1112.45
2013	1152.47
2014	1199.59
2015	1256.33
2016	1304.98