Year	Number of
1990	840.54
1991	875.1
1992	907.7
1993	930.86
1994	961.06
1995	982.19
1996	1017.11
1997	1050.75
1998	1098.43
1999	1145.73
2000	1143.14
2001	1153.91
2002	1169.73
2003	1192.85
2004	1208.31
2005	1221.42
2006	1212.76
2007	1208.76
2008	1238.34
2009	1230.19
2010	1249.85
2011	1277.75
2012	1304.95
2013	1323.86
2014	1356.37
2015	1370.13
2016	1390.64