Year	constant 2015 US$
1970	17738720677.896034
1971	18154014673.9692
1972	18997871241.087105
1973	20118755812.751877
1974	20901601736.075222
1975	20365650511.52216
1976	20265082153.559982
1977	20268802314.766968
1978	19899514312.28686
1979	20776108298.026245
1980	20534421824.945744
1981	20162777720.367878
1982	20181130515.655674
1983	19727518859.15056
1984	20878040715.09765
1985	21773235506.87196
1986	21696972202.128754
1987	22124666735.558537
1988	21031807378.31972
1989	20184230649.994827
1990	19946512348.868446
1991	19434990182.90792
1992	19628438565.671177
1993	19978381729.87496
1994	20533181771.210087
1995	20594564431.125347
1996	21503523819.3655
1997	22554841376.45964
1998	22386690089.90389
1999	22498666942.234154
2000	22733533119.768513
2001	22543184871.344414
2002	22391278288.725834
2003	23084840343.08152
2004	24093996073.163155
2005	25001715407.667652
2006	25612565877.854694
2007	26599772656.815117
2008	27378526402.810776
2009	25342606179.601105
2010	25694037408.287678
2011	26135992559.67757
2012	26669959698.25358
2013	27488643174.53755
2014	28288477834.039463
2015	27022010953.807987
2016	25911294822.775642
2017	25962385036.68491
2018	26418600806.034916
2019	26900113671.592422
2020	25476655988.426155
2021	26917846440.01239
2022	26792353001.96341
2023	26838358995.556465