Year	constant 2015 US$
1970	55498510611.31576
1971	59407648635.579094
1972	61725008152.934715
1973	57669628994.693634
1974	50177583173.633675
1975	44018581539.56306
1976	46926530255.13856
1977	45121014706.70474
1978	48439563532.74849
1979	55172280386.717415
1980	44462929600.936516
1981	36048439697.61811
1982	31813071451.625404
1983	34338543353.93527
1984	36138434242.92855
1985	34597277670.98496
1986	37561472978.096725
1987	40621287487.0902
1988	36537785034.515465
1989	45998461516.30825
1990	33933574483.543728
1991	20018165293.107613
1992	36595073655.69624
1993	49033910293.69367
1994	53170492188.15406
1995	55753669558.79107
1996	56091050155.32287
1997	57478364266.31483
1998	59583253422.48028
1999	58517303582.077675
2000	61264446307.31827
2001	61395143329.10374
2002	63245766790.57159
2003	74203741257.91953
2004	81802425533.38907
2005	90480881656.24811
2006	97280314521.33115
2007	103108938022.81921
2008	105665789072.0724
2009	98188818209.35208
2010	95861205096.89813
2011	105091217146.59518
2012	112054826471.56313
2013	113342574948.63937
2014	113910327577.99406
2015	114585555830.91621
2016	117938416579.04091
2017	112380894485.05533
2018	115116221788.46265
2019	116706510582.07808
2020	110551385167.15752
2021	112428132931.43834
2022	119329255932.76614
2023	116668101996.92186