Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	2255042587.30700
1961-01-01	1995149588.89438
1962-01-01	2185616569.43942
1963-01-01	2352289285.54687
1964-01-01	2815353410.51700
1965-01-01	3278253218.00356
1966-01-01	2968136289.02801
1967-01-01	3321930252.11014
1968-01-01	3672368963.25461
1969-01-01	3724089807.64782
1970-01-01	4085973606.54825
1971-01-01	4485546068.94724
1972-01-01	4300831669.00170
1973-01-01	6474205265.78191
1974-01-01	10759685448.38030
1975-01-01	9631961737.18448
1976-01-01	11069210655.33580
1977-01-01	12290662051.22030
1978-01-01	14150208198.03640
1979-01-01	16256427453.61060
1980-01-01	20507714524.58770
1981-01-01	23911672528.96810
1982-01-01	23649102049.44010
1983-01-01	19711625880.03700
1984-01-01	23888312561.18410
1985-01-01	23851369835.10760
1986-01-01	24408558425.57050
1987-01-01	26730667164.36190
1988-01-01	33841728865.83850
1989-01-01	40492024693.47280
1990-01-01	39175649143.79330
1991-01-01	38762485154.10520
1992-01-01	41154182596.72730
1993-01-01	42606201524.07460
1994-01-01	50437704289.39250
1995-01-01	57514371985.89660
1996-01-01	61009489251.17150
1997-01-01	63083399788.57960
1998-01-01	61092130879.85930
1999-01-01	65674768767.47690
2000-01-01	68875921286.97820
2001-01-01	61965768907.83440
2002-01-01	70512362133.80880
2003-01-01	85773224856.06940
2004-01-01	105772126443.82900
2005-01-01	120998641563.09100
2006-01-01	136629055538.12400
2007-01-01	162953780077.11500
2008-01-01	193998329853.86200
2009-01-01	159705968374.05200
2010-01-01	201843115072.38800
2011-01-01	249149892952.03000
2012-01-01	270069619980.15800
2013-01-01	250637076347.84700