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 0.00218 1993 0.00463 1994 0.01062 1995 0.01778 1996 0.02214 1997 0.02718 1998 0.03666 1999 0.04623 2000 0.05861 2001 0.07669 2002 0.15913 2003 0.31442 2004 0.67274 2005 1.20109 2006 1.35191 2007 1.75387 2008 2.93318 2009 5.48792 2010 8.85035 2011 11.5824 2012 14.77441 2013 17.48746 2014 22.12241 2015 29.1006 2016 34.74997 2017 40.17352