Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	62640071.8696390
1961-01-01	78153593.2974853
1962-01-01	81820517.7277321
1963-01-01	90947700.3003800
1964-01-01	120610142.1403550
1965-01-01	127636908.0780070
1966-01-01	130210703.3431860
1967-01-01	125712698.7570150
1968-01-01	149075262.3678030
1969-01-01	182204871.2572320
1970-01-01	203797538.8384650
1971-01-01	274880260.4925880
1972-01-01	407786091.1556920
1973-01-01	709384867.4058070
1974-01-01	822451482.5770150
1975-01-01	651608727.6078060
1976-01-01	588331426.7037100
1977-01-01	596429199.4853900
1978-01-01	688772586.6218440
1979-01-01	816007154.0353230
1980-01-01	1060272098.5027000
1981-01-01	1131695722.5965400
1982-01-01	1166279315.4447500
1983-01-01	1411966248.6569300
1984-01-01	1777005011.6158400
1985-01-01	1598053652.6026000
1986-01-01	1784769300.1855000
1987-01-01	2773640038.0270300
1988-01-01	3680282157.5683400
1989-01-01	4480402685.4481100
1990-01-01	4628587031.4267500
1991-01-01	4283405696.9295800
1992-01-01	4275883162.5630800
1993-01-01	4650294462.0763400
1994-01-01	5487646768.8037500
1995-01-01	6044199645.5630500
1996-01-01	7391434873.9770000
1997-01-01	8235752304.2970300
1998-01-01	7149406518.8720700
1999-01-01	8417294041.7294000
2000-01-01	10032869492.1881000
2001-01-01	9189950268.0359100
2002-01-01	9885905402.4086100
2003-01-01	12154066545.9362000
2004-01-01	16698383892.8808000
2005-01-01	19823530158.5689000
2006-01-01	26302102290.5554000
2007-01-01	37821548845.0249000
2008-01-01	43590814196.2422000
2009-01-01	31220387232.6321000
2010-01-01	40118940239.4093000
2011-01-01	48516719259.1765000
2012-01-01	48671871630.0738000
2013-01-01	48208418767.3381000