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 0.18601 1992 0.3036 1993 0.59296 1994 1.1238 1995 1.7414 1996 2.36255 1997 3.00174 1998 4.47845 1999 7.552 2000 10.54931 2001 19.62096 2002 35.80143 2003 51.42181 2004 73.28619 2005 75.24935 2006 86.21286 2007 93.28119 2008 104.09024 2009 121.04033 2010 125.21453 2011 123.98994 2012 124.04638 2013 108.91972 2014 107.78834 2015 117.7945 2016 116.56585 2017 118.2249