Year	Number of
1990	925.65
1991	972.65
1992	1020.26
1993	1059.27
1994	1101.96
1995	1146.27
1996	1190.19
1997	1239.83
1998	1261.16
1999	1274.01
2000	1290.69
2001	1289.76
2002	1304.51
2003	1317.75
2004	1335.26
2005	1330.51
2006	1355.11
2007	1356.63
2008	1357.56
2009	1366.79
2010	1385.09
2011	1381.41
2012	1388.73
2013	1400.52
2014	1426.73
2015	1446.84
2016	1453.8