Year per Person 1980 55.44232 1981 87.23744 1982 86.13998 1983 85.02818 1984 82.348 1985 86.19815 1986 84.19421 1987 80.98585 1988 78.59598 1989 82.83545 1990 81.8258 1991 81.30839 1992 82.22388 1993 84.25252 1994 86.72683 1995 99.72386 1996 102.74304 1997 102.83174 1998 98.08504 1999 98.35681 2000 90.71576 2001 94.18156 2002 93.72361 2003 89.82246 2004 88.09051 2005 86.98569 2006 85.37473 2007 80.52928 2008 79.03156 2009 37.00365 2010 34.62685 2011 34.7835 2012 33.07765 2013 32.66836 2014 34.81439 2015 34.25332 2016 33.74358