Year	Number of
1990	753.05
1991	823.58
1992	906.75
1993	983.65
1994	1059.58
1995	1096.32
1996	1138.14
1997	1168.04
1998	1247.73
1999	1315.89
2000	1424.46
2001	1501.19
2002	1565.19
2003	1661.59
2004	1688.16
2005	1743.11
2006	1851.41
2007	1953.45
2008	2061.23
2009	2137.43
2010	2171.76
2011	2270.76
2012	2389.89
2013	2462.15
2014	2569.68
2015	2684.24
2016	2820.86