Year per Person 1965 0.26925 1966 0.40201 1967 0.3002 1968 0.13016 1969 0.48612 1970 0.9538 1971 1.31624 1972 1.53072 1973 1.68473 1974 1.80191 1975 1.38741 1976 1.56823 1977 1.53744 1978 1.34849 1979 1.59109 1980 1.38441 1981 0.9397 1982 0.8202 1983 0.76619 1984 0.84121 1985 0.88308 1986 0.84202 1987 0.7535 1988 0.8121 1989 0.93608 1990 0.96137 1991 0.98168 1992 0.989 1993 0.96061 1994 0.92153 1995 0.90264 1996 0.94823 1997 0.99716 1998 0.91085 1999 0.84457 2000 0.86308 2001 0.88512 2002 0.79648 2003 0.83661 2004 0.89317 2005 0.88722 2006 0.83063 2007 0.76767 2008 0.68255 2009 0.68224 2010 0.75124 2011 0.71152 2012 0.68387 2013 0.63534 2014 0.63946 2015 0.61838 2016 0.5311