Year per Person 1965 0.40459 1966 0.40186 1967 0.43146 1968 0.44793 1969 0.45544 1970 0.46471 1971 0.44876 1972 0.45239 1973 0.45144 1974 0.5486 1975 0.65966 1976 0.71497 1977 0.8449 1978 1.00988 1979 1.19126 1980 1.5454 1981 1.80302 1982 2.07995 1983 1.98284 1984 1.9571 1985 1.88532 1986 1.7341 1987 1.77683 1988 1.73834 1989 1.70936 1990 1.70072 1991 1.75511 1992 1.72276 1993 1.69182 1994 1.66943 1995 1.5972 1996 1.69677 1997 1.7436 1998 1.75539 1999 1.64994 2000 1.67441 2001 1.70636 2002 1.70398 2003 1.78151 2004 1.77615 2005 1.71924 2006 1.65815 2007 1.54002 2008 1.38041 2009 1.26973 2010 1.24106 2011 1.21354 2012 1.19062 2013 1.15762 2014 1.10367 2015 1.01294 2016 0.95146