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 0.12109 1999 0.29746 2000 0.64334 2001 1.05262 2002 1.58465 2003 3.56484 2004 4.38636 2005 5.39974 2006 12.75313 2007 26.15914 2008 32.9726 2009 37.02475 2010 40.00153 2011 41.39948 2012 59.2363 2013 68.63836 2014 64.02775 2015 68.15385 2016 59.95953 2017 59.06943