Year	current US$
1971	52996867295.4216
1972	59314354670.55502
1973	75979738021.87148
1974	95122731547.88583
1975	105123384064.55692
1976	113297233398.66606
1977	119645810929.64629
1978	135395489698.99953
1979	152267102460.94528
1980	204591964318.0706
1981	325495630257.54535
1982	298341460152.61255
1983	257370414902.74072
1984	223420687858.05188
1985	202676613893.34943
1986	207567819181.12964
1987	232756683587.54224
1988	245400467232.66663
1989	237876002354.0608
1990	268549451322.51215
1991	282261976789.49457
1992	280367067392.33386
1993	261035878353.66238
1994	253831849087.8377
1995	296702870871.8368
1996	308694858071.76843
1997	322264186840.9323
1998	315626822064.6891
1999	322767739231.78345
2000	326906109278.3677
2001	314199596226.24567
2002	344394957998.52484
2003	435890724647.5934
2004	540147316046.871
2005	629455085470.3103
2006	755485579043.199
2007	848829781315.8887
2008	929149659602.6135
2009	955541375019.5765
2010	1102401540104.6895
2011	1224377183809.4688
2012	1301019027841.8286
2013	1404090081954.06
2014	1515547768406.0503
2015	1391540994760.3389
2016	1306147811273.5332
2017	1397083664431.2954
2018	1441352321349.7068
2019	1473601818465.5762
2020	1414726538747.7412
2021	1542818908828.3977