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 1996 0 1997 0 1998 0 1999 0 2000 0.06593 2001 0.25395 2002 0.37993 2003 0.69495 2004 1.26673 2005 2.08602 2006 4.47233 2007 8.52247 2008 14.37058 2009 19.83276 2010 24.18823 2011 29.82965 2012 34.64963 2013 34.7296 2014 38.70138 2015 39.01518 2016 38.64862