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 0.01163 1993 0.03688 1994 0.05575 1995 0.05385 1996 0.05545 1997 0.07462 1998 0.09556 1999 0.15926 2000 0.17926 2001 0.80389 2002 2.57235 2003 3.46911 2004 7.37371 2005 11.06528 2006 14.07233 2007 19.99393 2008 28.82845 2009 36.18292 2010 46.95685 2011 48.11109 2012 55.80095 2013 65.86053 2014 65.15197 2015 55.81007 2016 59.57413