Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	-277406032.565544
1961-01-01	-269071656.924199
1962-01-01	-265636475.362637
1963-01-01	-327860845.527296
1964-01-01	-308225918.803130
1965-01-01	-341484710.208704
1966-01-01	-331647774.327089
1967-01-01	-445000703.564654
1968-01-01	-536225943.740904
1969-01-01	-564390698.772402
1970-01-01	-655938526.644023
1971-01-01	-672434356.246332
1972-01-01	-641488061.525621
1973-01-01	-928752878.611619
1974-01-01	-904696630.834716
1975-01-01	-1196590572.516150
1976-01-01	-1572560875.960120
1977-01-01	-1564932480.586430
1978-01-01	-1817626160.369790
1979-01-01	-2345182204.337130
1980-01-01	-2552633579.083380
1981-01-01	-2699278313.957390
1982-01-01	-2335601098.668920
1983-01-01	-2988932384.609030
1984-01-01	-3944127058.342220
1985-01-01	-4271021890.587800
1986-01-01	-4619009686.996920
1987-01-01	-5482890753.949970
1988-01-01	-7786924183.168160
1989-01-01	-11157127703.731000
1990-01-01	-12906681922.791900
1991-01-01	-11967056716.185400
1992-01-01	-9980241627.160120
1993-01-01	-8167546375.655540
1994-01-01	-11151324799.591000
1995-01-01	-13589631175.631500
1996-01-01	-14318457703.000800
1997-01-01	-13777934385.489900
1998-01-01	-11403001946.869300
1999-01-01	-11876747687.674800
2000-01-01	-11081218053.604800
2001-01-01	-10349932183.685300
2002-01-01	-11560258330.806400
2003-01-01	-14993431899.883800
2004-01-01	-21922652475.660300
2005-01-01	-27958916805.261100
2006-01-01	-32430498901.788500
2007-01-01	-41100520836.964800
2008-01-01	-37071398747.390400
2009-01-01	-36948154503.090500
2010-01-01	-48234089067.588000
2011-01-01	-51052853322.786200
2012-01-01	-37911573135.487200
2013-01-01	-35269086961.765800