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 0.04123 1995 0.06403 1996 0.09121 1997 0.17318 1998 0.1797 1999 0.2722 2000 0.27896 2001 0.22815 2002 0.22952 2003 0.23726 2004 0.65456 2005 1.27691 2006 1.45403 2007 2.21122 2008 5.94675 2009 9.68844 2010 21.8837 2011 50.93863 2012 54.78332 2013 57.33763 2014 65.45498 2015 72.29362 2016 69.49596 2017 76.11619