Year Total 1985 58121000000 1986 60606000000 1987 62196000000.00001 1988 64334000000 1989 65131000000 1990 62560000000 1991 60528000000 1992 59293000000 1993 58882000000 1994 58705000000 1995 60847000000 1996 64257000000.00001 1997 64598000000 1998 64930000000.00001 1999 64691999999.99999 2000 73466000000.00002 2001 74646999999.99998 2002 76348000000 2003 83227000000 2004 84333000000 2005 82579000000 2006 84361000000 2007 88024000000 2008 83516000000 2009 82250000000 2010 85900000000 2011 87561000000 2012 87574000000 2013 87065000000 2014 86002999999.99998 2015 83887999999.99998 2016 83299000000