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 0.20241 1994 0.41255 1995 0.74748 1996 1.02211 1997 1.14798 1998 1.53506 1999 2.75744 2000 6.79781 2001 15.35587 2002 19.72838 2003 22.4438 2004 27.16515 2005 33.88909 2006 40.58511 2007 39.64853 2008 52.26985 2009 51.5349 2010 60.38438 2011 67.56148 2012 51.20953 2013 50.73348 2014 48.99145 2015 58.99056 2016 61.86061