Year	Number of
1990	1284.35
1991	1366.35
1992	1372.98
1993	1505.32
1994	1549.89
1995	1506.36
1996	1387.95
1997	1298.95
1998	1289.94
1999	1256.07
2000	1222.39
2001	1288.71
2002	1283.53
2003	1281.1
2004	1284.97
2005	1357.73
2006	1378.28
2007	1424.22
2008	1350.74
2009	1240.56
2010	1251.95
2011	1223.19
2012	1208
2013	1208.98
2014	1162.07
2015	1151.36
2016	1151.78