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 1995 0.01693 1996 0.02896 1997 0.04707 1998 0.08301 1999 0.2753 2000 0.93867 2001 1.11972 2002 1.25078 2003 2.10997 2004 3.9581 2005 7.87875 2006 13.43187 2007 20.73732 2008 27.05139 2009 32.74781 2010 39.32836 2011 57.23584 2012 71.59674 2013 68.60461 2014 64.75183 2015 71.78449 2016 72.42934 2017 78.61493