Year Per 100 People 1960 1.10575 1965 2.63855 1970 2.45535 1975 2.47636 1976 2.47508 1977 2.56809 1978 2.58195 1979 2.72531 1980 2.68461 1981 2.64153 1982 3.45149 1983 3.87558 1984 3.79115 1985 4.24446 1986 4.71787 1987 5.73658 1988 6.84251 1989 8.31421 1990 9.23477 1991 11.13192 1992 12.78324 1993 14.48466 1994 13.979 1995 13.98656 1996 13.85275 1997 13.83852 1998 14.10736 1999 15.10965 2000 14.45687 2001 13.8193 2002 11.93718 2003 12.36503 2004 12.212 2005 11.92119 2006 11.8058 2007 11.362 2008 10.16576 2009 9.92836 2010 9.41768 2011 8.76206 2012 7.54824 2013 6.98789 2014 6.45447 2015 6.56938 2016 6.26782