Year Total 1985 71818000000 1986 75478000000.00002 1987 74079000000 1988 75322000000 1989 75851000000 1990 64309000000 1991 56803000000.00001 1992 54195000000 1993 55476000000.00001 1994 55136000000 1995 59266000000.00001 1996 61350000000 1997 57148000000 1998 53496000000 1999 50710000000 2000 51934000000 2001 53866000000.00001 2002 54738000000 2003 55140000000 2004 56498999999.99999 2005 59413000000 2006 62696000000.00001 2007 61673000000 2008 64956000000 2009 58016000000.00001 2010 60979000000 2011 62216000000 2012 59047000000 2013 58888000000.00001 2014 63285000000 2015 66296000000.00001 2016 64837000000