Year	current US$
1971	52996867295.42166
1972	59314354670.55508
1973	75979738021.87155
1974	95122731547.88593
1975	105123384064.55704
1976	113297233398.6662
1977	119645810929.64644
1978	135395489698.99973
1979	152267102460.94543
1980	204591964318.0708
1981	325495630257.5457
1982	298341460152.61285
1983	257370414902.74103
1984	223420687858.05215
1985	202676613893.34967
1986	207567819181.1299
1987	232756683587.5425
1988	245400467232.6669
1989	237876002354.061
1990	268549451322.51233
1991	282261976789.4948
1992	280367067392.334
1993	261035878353.66248
1994	253831849087.83786
1995	296702870871.83704
1996	308694858071.76855
1997	322264186840.93256
1998	315626822064.68915
1999	322767739231.78357
2000	326906109278.3678
2001	314199596226.24567
2002	344394957998.52484
2003	435890724647.5934
2004	540147316046.871
2005	629455085470.3103
2006	755485579043.1989
2007	848829781315.8887
2008	929149659602.6138
2009	955541375019.5768
2010	1102401540104.6895
2011	1224377183809.4685
2012	1301019027841.8284
2013	1404090081954.0598
2014	1515547768406.0503
2015	1391540994760.3389
2016	1306147811273.5334
2017	1397083664431.2954
2018	1441352321349.7068
2019	1473601818465.5762
2020	1414726538747.7412
2021	1542818908828.3984