Year Per 100 People 1983 31.51733 1984 32.06413 1985 33.46838 1986 35.71273 1987 37.05299 1988 37.5863 1989 40.6866 1990 42.61531 1991 44.28771 1992 54.56382 1993 56.08369 1994 56.56059 1995 62.17104 1996 65.10359 1997 66.16116 1998 72.1109 1999 73.45734 2000 74.04625 2001 73.84554 2002 73.25842 2003 72.60827 2004 71.89773 2005 71.30301 2006 70.91241 2007 70.32058 2008 70.17891 2009 66.4909 2010 62.86082 2011 59.30993 2012 58.59497 2013 58.05034 2014 56.95563 2015 50.21238 2016 48.18842 2017 47.30539