Year Per Capita 1965 3.6005 1966 3.58635 1967 3.46963 1968 3.59491 1969 3.73741 1970 3.77884 1971 3.9252 1972 3.85208 1973 3.7484 1974 3.71173 1975 3.76737 1976 3.81639 1977 3.87357 1978 3.86511 1979 3.84714 1980 3.71533 1981 3.69439 1982 3.72314 1983 3.70619 1984 3.78093 1985 3.70222 1986 3.68685 1987 3.64388 1988 3.68534 1989 3.54174 1990 3.04173 1991 2.79102 1992 2.49418 1993 2.37572 1994 2.20447 1995 2.18758 1996 2.17998 1997 2.24141 1998 2.0588 1999 1.78603 2000 2.10339 2001 2.06256 2002 2.02801 2003 2.05522 2004 2.04921 2005 1.97374 2006 2.04257 2007 2.06526 2008 1.89384 2009 1.68354 2010 1.78127 2011 1.74231 2012 1.64422 2013 1.62377 2014 1.51313 2015 1.5636 2016 1.59269