Year	current US$
1960	71700000
1961	40300000
1962	48200000
1963	62100000
1964	62600000
1965	72100000
1966	97110000
1967	47510000
1968	51110000
1969	95920000
1970	117070000
1971	193652635.603336
1972	268963492.777225
1973	380813257.764417
1974	1249225427.6816
1975	1491466367.76412
1976	1701769027.73625
1977	2883141145.81075
1978	2500417161.42502
1979	2870051161.90453
1980	3928507887.81931
1981	4067476216.35365
1982	5913211286.52919
1983	5192117270.34154
1984	4590196479.84865
1985	5470715641.47627
1986	5501144475.43209
1987	4141579717.40272
1988	1923539170.51311
1989	3101865424.34358
1991	3409008570.11257
1992	5146960170.47314
1993	4214126406.9449
1994	3500697938.08348
1995	3560844442.8179
1996	3515074038.28412
1997	3451772339.29882
1998	3947095488.07051
1999	4823691306.35157
2000	7082344864.07023
2001	9897313109.35057
2002	9208103793.97242
2003	7577041893.15726
2004	8241930828.51073
2005	8862815699.36827
2006	12566012445.8145
2007	16660019110.8892
2008	17112849340.7662
2009	20267475315.1716
2010	21236691168.1102
2011	25795148923.533
2012	28885713960.8085
2013	29352535523.6659
2014	32113925461.5893
2015	28270007775.4936
2016	31027326168.5792
2017	33598589466.8625
2018	37028893257.5816
2019	39801560670.9193
2020	48117162093.7183
2021	44903838897.8338
2022	47860219923.2635
2023	47382988266.9117