Year US Dollars, Sum Over Component Sub-periods 1972-01-01 2469800000.000000 1973-01-01 3200070000.000000 1974-01-01 3483130000.000000 1975-01-01 4046640000.000000 1976-01-01 4447390000.000000 1977-01-01 4985180000.000000 1978-01-01 6316120000.000000 1979-01-01 6908820000.000000 1980-01-01 7581040000.000000 1981-01-01 7429480000.000000 1982-01-01 7560300000.000000 1983-01-01 8930020000.000000 1984-01-01 8726360000.000000 1985-01-01 9274820000.000000 1986-01-01 12484670000.000000 1987-01-01 15758190000.000000 1988-01-01 16693970000.000002 1989-01-01 17040419999.999998 1990-01-01 20114490000.000000 1991-01-01 20564680000.000000 1992-01-01 21736570000.000000 1993-01-01 22075750000.000000 1994-01-01 23071590000.000000 1995-01-01 26444140000.000000 1996-01-01 26741970000.000000 1997-01-01 26152930000.000000 1998-01-01 28185560000.000000 1999-01-01 29746070000.000000 2000-01-01 30709260000.000000 2001-01-01 29584910000.000000 2002-01-01 30939470000.000000 2003-01-01 36297970000.000000 2004-01-01 43920180000.000000 2005-01-01 49790570000.000000 2006-01-01 54865940000.000000 2007-01-01 65861210000.000010 2008-01-01 77151800000.000000 2009-01-01 76389910000.000000 2010-01-01 83366500000.000000 2011-01-01 95032230000.000000 2012-01-01 90851000000.000000 2013-01-01 95461080000.000000