Year	Number of
1990	958.2
1991	966.22
1992	985.31
1993	1021.14
1994	1043.1
1995	1087.76
1996	1081.03
1997	1136.11
1998	1169.05
1999	1150.74
2000	1159.06
2001	1156.01
2002	1170.76
2003	1179.24
2004	1172.22
2005	1226.01
2006	1248.93
2007	1282.46
2008	1306.54
2009	1331.48
2010	1343.19
2011	1363.58
2012	1361.71
2013	1370.11
2014	1384.58
2015	1402.81
2016	1421.9