Year	Number of
1990	886.85
1991	892.44
1992	899.83
1993	909.24
1994	912.77
1995	929.14
1996	931.69
1997	954.06
1998	971.42
1999	984.53
2000	987.63
2001	987.34
2002	995.4
2003	1002.76
2004	1010.2
2005	1023.14
2006	1031.59
2007	1043.95
2008	1066.98
2009	1091.34
2010	1115.53
2011	1135.24
2012	1156.73
2013	1178.08
2014	1206
2015	1231.79
2016	1256.23