Year	Number of
1990	708.12
1991	742.12
1992	778.76
1993	817.82
1994	860.69
1995	907.83
1996	953.67
1997	1002.48
1998	1053.15
1999	1104.64
2000	1156.4
2001	1186.04
2002	1214.02
2003	1244.64
2004	1276.52
2005	1310.61
2006	1328.31
2007	1347.89
2008	1370.89
2009	1396.37
2010	1424.68
2011	1451.35
2012	1480.66
2013	1509.02
2014	1542.35
2015	1581.16
2016	1623.59