Year	current US$
1960	208784000
1961	287568000
1962	150144000
1963	324080000
1964	384432000
1965	627480000
1966	428560000
1967	278816000
1968	69336000
1969	155136000
1970	983632000
1971	888952000
1972	611280000
1973	1152840000
1974	2374104000
1975	2000648000
1976	1112187216.3879166
1977	2617658264.298055
1978	2601796459.78829
1979	3402253891.6904187
1980	4671953291.795565
1981	2488272486.2329187
1982	-70919470.94074678
1983	4771262511.033024
1984	3372500417.093691
1985	3842380640.941792
1986	-1199791425.9047065
1987	1136278708.99583
1988	7396182754.426214
1989	12697324731.979591
1990	13823309330.622673
1991	14702687489.853996
1992	13429591217.54578
1993	13617791275.37178
1994	14787103084.130121
1995	11776948714.254002
1996	8741057639.975956
1997	9166741765.444292
1998	9970727367.496778
1999	8486604741.769119
2000	7677092668.671696
2001	4779452625.476566
2002	8434937372.3456545
2003	5946827047.018826
2004	10368379953.618507
2005	7448813954.111492
2006	9020722083.242119
2007	7904251316.228705
2008	6529578964.137184
2009	4574397777.033665
2010	8604536654.297781
2011	9582488826.461515
2012	8654384561.612179
2013	9166555851.272066
2014	8486813792.792149
2015	6939398231.995965
2016	6847720201.040953
2017	7939860989.742592
2018	5402345427.035126
2019	6293207516.982908
2020	1447645372.6606202
2021	5212136269.15954
2022	4988103004.121258
2023	6327302642.414989