Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	297540341.380785
1961-01-01	331594531.562188
1962-01-01	355302796.160152
1963-01-01	407580434.679481
1964-01-01	460105357.053948
1965-01-01	535179316.327084
1966-01-01	541988141.266082
1967-01-01	639688511.374190
1968-01-01	701988735.478237
1969-01-01	777703718.780869
1970-01-01	924327635.168996
1971-01-01	999564583.609412
1972-01-01	1108892002.265480
1973-01-01	1386006979.891270
1974-01-01	1906067383.305680
1975-01-01	2033809058.897090
1976-01-01	2138829874.162440
1977-01-01	2143590977.666300
1978-01-01	2750506169.538140
1979-01-01	3248379163.872120
1980-01-01	3861442578.095310
1981-01-01	4287562656.341350
1982-01-01	4365941263.469260
1983-01-01	4180898783.539080
1984-01-01	4538507619.701640
1985-01-01	4217939688.840510
1986-01-01	4780775293.980020
1987-01-01	6137982117.965440
1988-01-01	8446766836.074000
1989-01-01	9081769127.888210
1990-01-01	10365756933.518800
1991-01-01	11182804073.129400
1992-01-01	11661966661.569000
1993-01-01	12565299299.061500
1994-01-01	14587221299.052300
1995-01-01	16861071832.142600
1996-01-01	19333794525.733200
1997-01-01	19397266371.172600
1998-01-01	17262450543.239300
1999-01-01	18791137879.113800
2000-01-01	19918043468.817400
2001-01-01	17884389330.233200
2002-01-01	19375353575.582600
2003-01-01	23428494202.232600
2004-01-01	27742109522.525000
2005-01-01	30433049373.468600
2006-01-01	33078882962.033300
2007-01-01	40373440800.987300
2008-01-01	42905219206.680600
2009-01-01	39833096106.225800
2010-01-01	46335325862.622500
2011-01-01	51639940500.245000
2012-01-01	53046801535.608000
2013-01-01	52777228319.864900