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 0.00612 1994 0.00644 1995 0.00946 1996 0.00929 1997 0.01013 1998 0.01002 1999 0.01274 2000 0.25497 2001 0.50971 2002 0.77133 2003 0.92045 2004 1.40008 2005 2.06108 2006 2.60575 2007 3.40069 2008 5.85203 2009 10.84634 2010 19.14044 2011 21.17083 2012 24.11154 2013 26.42481 2014 32.28189 2015 49.00053 2016 50.90989 2017 54.4963