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 0.15579 1991 0.1524 1992 0.18622 1993 0.28686 1994 0.35209 1995 0.39898 1996 0.5655 1997 0.96517 1998 1.39178 1999 1.9834 2000 4.23149 2001 6.29756 2002 7.39765 2003 41.31184 2004 42.19237 2005 45.51574 2006 44.73508 2007 49.60226 2008 57.75233 2009 109.71082 2010 116.49742 2011 115.01784 2012 123.16152 2013 125.57951 2014 110.14573 2015 112.11724 2016 110.86128 2017 104.9636