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 0.00821 1994 0.01318 1995 0.01397 1996 0.02246 1997 0.04674 1998 0.06334 1999 0.15047 2000 0.15696 2001 0.44161 2002 0.79669 2003 1.92272 2004 3.92246 2005 8.23994 2006 15.07531 2007 23.62896 2008 31.12838 2009 35.96268 2010 40.2384 2011 49.85109 2012 50.9445 2013 51.10018 2014 52.20028 2015 49.83804 2016 45.1217 2017 44.73498