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 0.20836 1991 0.23399 1992 0.26889 1993 0.36747 1994 0.51215 1995 1.03972 1996 1.82521 1997 3.6837 1998 5.18741 1999 8.68674 2000 15.18801 2001 22.817 2002 28.91733 2003 38.24709 2004 45.05679 2005 53.75011 2006 62.8936 2007 75.25843 2008 83.37818 2009 87.35748 2010 95.42812 2011 103.44334 2012 118.54431 2013 122.17097 2014 131.40113 2015 139.92549 2016 143.72506 2017 145.39916