Year	current US$
1970	-3457954.5454545454
1971	16434090.909090908
1972	-12279628.370722864
1973	-3806723.621435704
1974	25841920.96048024
1975	24637605.72543917
1976	-10330460.558818685
1977	33864333.48418565
1978	-15007930.360370329
1979	14525241.066364152
1980	16675004.168751042
1981	35021178.81564741
1982	73918147.5934097
1983	-43070829.37511069
1984	24799881.364435203
1985	-23561893.33545342
1986	-50943699.18402499
1987	-10755690.691156548
1988	43009252.80141349
1989	-10132920.069142278
1990	-30816316.026065562
1991	20903717.69077044
1992	2119108.3986869613
1993	34130055.97368172
1994	3718224.761381898
1995	47177597.744378336
1996	380661.6541353383
1997	1438558.7333913457
1998	12768062.36902519
1999	1658941.0702658314
2000	33987928.66592042
2001	-22258053.920673013
2002	208942.22996082334
2003	-16053461.784145275
2004	-5411466.0280346535
2005	-124269557.66516306
2006	115756982.04616699
2007	32649582.390133478
2008	118238604.90131089
2009	-1183030.514791521
2010	-23846513.490441743
2011	32822763.293133177
2012	4858798.036960107
2013	-21341420.463820256
2014	11684301.910667967
2015	12367828.789409632
2016	30821714.145979013
2017	-7681123.993013228
2018	71461277.94001105
2019	-43666812.54808525
2020	23382277.19843057
2021	36659270.68327954
2022	71366454.71476993
2023	214606810.12340635