Year	current US$
1960	82940250000
1961	87689380000
1962	91699250000
1963	100176310000
1964	114141730000
1965	124507520000
1966	138957810000
1967	147025968000
1968	167903412000
1969	193632360000
1970	227184236000
1971	255752078000
1972	305424728000
1973	423622170000
1974	596231096000
1975	631530718000
1976	722625357000
1977	817082686000
1978	957576240000
1979	1203517190000
1980	1458536269000
1981	1457455442272.727
1982	1344045792792.8179
1983	1298491899143
1984	1379077026611.394
1985	1411277284362.4238
1986	1595266484530.518
1987	1881101217012.5662
1988	2165931786108.3699
1989	2331524173044.83
1990	2671899849738.79
1991	2748871066287.5996
1992	2936245680233.69
1993	2906311718583.27
1994	3285770718744.71
1995	3907756355301.65
1996	4046435065412.48
1997	4366747813032.3604
1998	4303397655452.2603
1999	4482177848166.26
2000	4985120901984
2001	4811053051351
2002	4981769470173
2003	5791163750714
2004	6914348788609
2005	7662246902726
2006	8656494109542
2007	9864144513451
2008	11188276966863
2009	8543690414516
2010	10161216926395
2011	12012312532683
2012	11974811451131
2013	12220983927784
2014	12244156876643
2015	10647321007097
2016	10385239013249
2017	11394367276118
2018	12493477320923
2019	12068912578953
2020	10984443045264