Year	Number of
1990	784.89
1991	819.16
1992	866.91
1993	925.17
1994	1003.23
1995	1096.99
1996	1179.17
1997	1236.15
1998	1298.28
1999	1350.71
2000	1394.51
2001	1431.48
2002	1481.18
2003	1550.69
2004	1611.79
2005	1660.4
2006	1706.74
2007	1746.07
2008	1796.91
2009	1888.26
2010	1993.59
2011	2056.61
2012	2124.35
2013	2189.41
2014	2239.69
2015	2324.99
2016	2427.83