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 0.00575 1993 0.04099 1994 0.10146 1995 0.19505 1996 0.56332 1997 2.10749 1998 5.00036 1999 10.26018 2000 17.50172 2001 25.96994 2002 36.11449 2003 45.26991 2004 60.15217 2005 76.02806 2006 95.83845 2007 107.98127 2008 114.61337 2009 116.91268 2010 122.51551 2011 130.89505 2012 141.15311 2013 148.71736 2014 148.60475 2015 142.52426 2016 138.6595 2017 130.54144