Year Per 100 People 1960 0 1965 0 1970 0 1975 0 1976 0 1977 0 1978 0 1979 0 1980 0 1981 0 1982 0 1983 0 1984 0 1985 0 1986 0 1987 0 1988 0 1989 0 1990 0 1991 0 1992 0 1993 0 1994 0.03897 1995 0.07192 1996 0.08964 1997 0.11829 1998 0.12354 1999 0.16543 2000 0.19723 2001 0.1849 2002 2.52635 2003 3.92031 2004 5.14541 2005 6.062 2006 6.98864 2007 11.82071 2008 15.97586 2009 57.0583 2010 71.91646 2011 56.62357 2012 59.02742 2013 50.26586 2014 60.28627 2015 66.06803 2016 80.84371 2017 82.54152