Year US Dollars, Sum Over Component Sub-periods 1970-01-01 11722300000.000000 1971-01-01 13653000000.000000 1972-01-01 16942400000.000002 1973-01-01 23674700000.000000 1974-01-01 33427600000.000000 1975-01-01 35224000000.000000 1976-01-01 39835800000.000000 1977-01-01 43340900000.000000 1978-01-01 49426900000.000000 1979-01-01 63936400000.000000 1980-01-01 59006600000.000000 1981-01-01 54829500000.000000 1982-01-01 67297399999.999990 1983-01-01 65280000000.000000 1984-01-01 66285200000.000000 1985-01-01 68657100000.000010 1986-01-01 79309700000.000000 1987-01-01 92621300000.000000 1988-01-01 104066200000.000000 1989-01-01 108879500000.000000 1990-01-01 131072900000.000000 1991-01-01 132044600000.000000 1992-01-01 139038600000.000000 1993-01-01 129698600000.000000 1994-01-01 143467000000.000000 1995-01-01 197509000000.000000 1996-01-01 196724300000.000000 1997-01-01 190510900000.000000 1998-01-01 196871400000.000000 1999-01-01 196944500000.000000 2000-01-01 207165100000.000000 2001-01-01 205533700000.000000 2002-01-01 210782900000.000000 2003-01-01 266211700000.000000 2004-01-01 315478600000.000000 2005-01-01 347516100000.000000 2006-01-01 393744600000.000000 2007-01-01 465106600000.000000 2008-01-01 527155300000.000060 2009-01-01 415945900000.000000 2010-01-01 476992000000.000000 2011-01-01 549537600000.000000 2012-01-01 537929800000.000060 2013-01-01 555296800000.000000