Year	constant 2015 US$
1970	18608816772.33594
1971	19681783417.85664
1972	21207339233.182423
1973	22393531669.191406
1974	23401527458.86289
1975	25015393843.205074
1976	26580939831.647648
1977	27714732192.858196
1978	28583505195.501167
1979	29647094238.070305
1980	31023089934.765617
1981	32428842767.18749
1982	33269853538.28124
1983	34322781271.484364
1984	35463360523.04687
1985	36996707337.89062
1986	38514520972.26562
1987	40182118846.87499
1988	41151833113.28124
1989	42478810530.468735
1990	44407143934.374985
1991	45183802957.81249
1992	43735888635.54687
1993	42069400273.82812
1994	42153723253.51562
1995	43429663077.73437
1996	44329478032.031235
1997	45797363586.3281
1998	46726025875.78123
1999	47519327592.5781
2000	48127340656.64061
2001	49274576985.54686
2002	50471741394.531235
2003	51103054229.29686
2004	51841989814.4531
2005	52870508264.06248
2006	53480740353.90623
2007	54155324191.40622
2008	55116162354.68747
2009	55902806994.1406
2010	55759679831.24998
2011	55688671006.24998
2012	56001553641.40622
2013	56656166246.87497
2014	56471987107.03122
2015	57189841947.265594
2016	57679137132.03123
2017	57800074037.10935
2018	58901820337.49998
2019	60098984746.48435
2020	60792430303.12498
2021	63156802273.04685
2022	62506627719.1406
2023	65293724100.390594