Year	current US$
1977	13272318383.56803
1978	14762412292.456972
1979	17612484406.459644
1980	23951011731.664185
1981	24675124156.969746
1982	23411695827.521008
1983	21625370404.14299
1984	20529463037.863277
1985	21170866201.042965
1986	20399340949.389763
1987	21757461816.301937
1988	24610665964.91271
1989	26680531027.640087
1990	30205837421.240776
1991	31637246994.10782
1992	35923156591.78053
1993	38953386377.20883
1994	43563041958.14576
1995	48072344406.79093
1996	53887548213.37143
1997	62621187521.45763
1998	60939613062.489136
1999	60446240351.0177
2000	64345459769.7369
2001	68016615864.194
2002	69226421378.94415
2003	81218723207.89027
2004	104326468982.9952
2005	126770800527.70688
2006	152832927485.68924
2007	187838787244.60687
2008	207819812225.89944
2009	185884072148.2632
2010	223999333764.97208
2011	242115118327.4908
2012	250208740973.92346
2013	257200533164.64044
2014	277015831016.88367
2015	269965283860.64853
2016	272572844882.37848
2017	306806298362.78143
2018	341464534006.1489
2019	357980252891.61633
2020	277539248954.8847
2021	319791971911.6171
2022	404014067253.6869
2023	407181378809.7066