Year Per Capita 1965 0.17776 1966 0.18833 1967 0.18928 1968 0.22139 1969 0.23636 1970 0.26266 1971 0.28276 1972 0.31776 1973 0.38101 1974 0.40017 1975 0.40293 1976 0.42594 1977 0.42917 1978 0.46187 1979 0.47837 1980 0.45376 1981 0.42151 1982 0.42365 1983 0.40196 1984 0.40614 1985 0.41142 1986 0.45449 1987 0.45785 1988 0.45947 1989 0.45855 1990 0.43841 1991 0.43748 1992 0.46015 1993 0.47024 1994 0.49368 1995 0.50617 1996 0.52894 1997 0.55188 1998 0.56279 1999 0.56051 2000 0.53837 2001 0.54062 2002 0.52881 2003 0.50566 2004 0.51962 2005 0.52961 2006 0.52917 2007 0.5627 2008 0.60219 2009 0.60011 2010 0.64442 2011 0.66366 2012 0.66967 2013 0.71232 2014 0.73742 2015 0.71188 2016 0.66852