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 0.00316 1991 0.01288 1992 0.02205 1993 0.03008 1994 0.10285 1995 0.28822 1996 0.40784 1997 0.5896 1998 1.00099 1999 2.96649 2000 7.3543 2001 9.6138 2002 12.91756 2003 16.27759 2004 24.75795 2005 34.43843 2006 53.58469 2007 86.84171 2008 106.72747 2009 120.89416 2010 123.49593 2011 130.30444 2012 136.12078 2013 139.24121 2014 106.20623 2015 111.49958 2016 110.14355 2017 118.16879