Year	current US$
1975	28805413484.32174
1976	26682867466.383816
1977	30370989799.875618
1978	37797915322.223175
1979	48440832391.2139
1980	47671708279.7673
1981	37489372295.838394
1982	36376271594.39159
1983	31442727037.976055
1984	34551274453.918015
1985	37739539104.76437
1986	54765922744.7692
1987	69135757765.11978
1988	85897378648.40306
1989	92481618734.34459
1990	116997011685.87221
1991	122346706949.8986
1992	122042678645.57938
1993	100756287324.64023
1994	99241903829.2332
1995	130999287629.55067
1996	134941301501.99577
1997	130222315602.62996
1998	140568270611.0367
1999	141510891865.17206
2000	133609455354.34174
2001	138635284739.95508
2002	162760078742.08533
2003	214431923506.08804
2004	243828910591.94327
2005	255237321809.5205
2006	273705132125.5074
2007	309744626532.0663
2008	319201244051.14294
2009	286723963209.1586
2010	265128133629.07715
2011	264388104767.86447
2012	245303807035.72842
2013	260997963862.2363
2014	268573940022.97342
2015	251290937057.16864
2016	270395224268.24112
2017	291225715681.0724
2018	317699083262.4169
2019	319779893838.7825
2020	269549796945.6034
2021	323048308343.9038
2022	313252721340.0154
2023	361249538508.7235