Year	current US$
1970	218260000.229
1971	263159999.849
1972	284159893.99
1973	304819209.09999996
1974	337194679.55090004
1975	1663454553.271639
1976	2778358889.7188005
1977	5199344846.134194
1978	7245432259.895677
1979	8772522692.47967
1980	11957628998.073544
1981	11657904826.131268
1982	13611065515.471453
1983	15448063925.566223
1984	14310421542.854733
1985	13438581330.378767
1986	13395007920.052149
1987	15652981704.998098
1988	15045431293.40942
1989	14873181250.29917
1990	16556484744.301304
1991	19346905833.485123
1992	22897397612.862286
1993	23737845808.1012
1994	25486090054.869972
1995	27626131583.678352
1996	28710643389.05553
1997	33956999878.79188
1998	31206296551.41654
1999	35162680669.46604
2000	39712919948.81086
2001	44714724444.73482
2002	55134769749.75391
2003	67686772143.39572
2004	73150124151.55412
2005	95310071005.77145
2006	113630867559.10884
2007	139035041644.24292
2008	169607561314.08163
2009	167761006316.6333
2010	188361291373.07
2011	216533158994.48132
2012	237515524916.56003
2013	249300394971.5251
2014	261691952589.09576
2015	259729864851.4715
2016	253005736626.5554
2017	277548489584.09045
2018	302362807665.7599
2019	318798599684.9461
2020	321520836106.1505
2021	354675065420.2454
2022	386712788124.45605