Year	current US$
1960	-7529999.999999798
1961	97519999.99999993
1962	377649999.99999994
1963	455679999.99999976
1964	457760000.00000024
1965	330179999.99999994
1966	185299999.9999999
1967	236020000.00000012
1968	269479999.9999999
1969	483200000.00000024
1970	72660000.00000021
1971	477289000.00000024
1972	620759999.9999999
1973	701488000.0000006
1974	-503131000.0000001
1975	-380480000.0000005
1976	90790999.99999969
1977	210672000.0000009
1978	-1460560000
1979	-1572643000.0000002
1980	-2436990000
1981	2150220000
1982	4811999999.999997
1983	2571000000
1984	54000000
1985	-12501000000
1986	-7389999999.999858
1987	291000000
1988	-4060999999.9999933
1989	-4928000000
1990	10667999999.999992
1991	11601000000.00001
1992	4997999999.99999
1993	-11792000000
1994	7357000000
1995	11957999999.999987
1996	17550000000.0012
1997	42823219999.99997
1998	43836689479.99978
1999	30640955366.57988
2000	28785851578.519524
2001	28086220298.130917
2002	37382671264.020065
2003	35821129066.29988
2004	51174382539.96077
2005	124626797517.20981
2006	208918924500.6007
2007	308036028783.3492
2008	348832533153.93115
2009	220130401366.7795
2010	222400893681.2907
2011	180895321761.0226
2012	231864021791.1981
2013	234872118181.31064
2014	221549605865.3841
2015	358836357198.6877
2016	255484319292.72696
2017	215697133467.24338
2018	91487265090.81006
2019	132787798765.52869
2020	355147112390.2315
2021	460829383707.24005
2022	577846955118.8796
2023	386035269476.16327