Year per Person 1980 51.24454 1981 49.53782 1982 50.84162 1983 49.85097 1984 48.41669 1985 47.44872 1986 46.37636 1987 55.24811 1988 145.38963 1989 164.52281 1990 160.07208 1991 155.49486 1992 151.15244 1993 146.75006 1994 143.05587 1995 149.64084 1996 145.06455 1997 133.39352 1998 129.30003 1999 129.22807 2000 118.73758 2001 115.37772 2002 115.11951 2003 111.32518 2004 108.41062 2005 105.6337 2006 103.00415 2007 100.4916 2008 98.00279 2009 95.43513 2010 92.78607 2011 101.77214 2012 98.51336 2013 95.29605 2014 94.97207 2015 92.05428 2016 89.36479