Year	current US$
1968	4905748215.993116
1969	5451510267.984617
1970	5740151176.928018
1971	6248641976.077176
1972	7336545883.073273
1973	9084751071.980198
1974	9939078299.497818
1975	11286945711.176373
1976	13175156062.116608
1977	14662260602.391039
1978	17078500250.665361
1979	19640688268.186653
1980	22802483463.07499
1981	22934234457.66158
1982	23083086010.734444
1983	21202053479.12113
1984	20437499473.329594
1985	20688685636.852165
1986	23839410416.31855
1987	26265370165.632713
1988	28774340499.7584
1989	29084292925.808285
1990	33092473561.338184
1991	33586645050.787987
1992	37692103841.165344
1993	39175128483.19776
1994	41973316213.4935
1995	44428126740.52055
1996	44550212281.0385
1997	44414561307.613075
1998	45684768637.56211
1999	45891063641.01746
2000	44475804736.848076
2001	50630432392.338234
2002	63764742792.01422
2003	80511625377.21788
2004	97759238415.78963
2005	106110791276.7903
2006	108557692856.12434
2007	129559337522.28717
2008	147909075010.47275
2009	125364104383.82202
2010	125954223289.10384
2011	135068573275.96925
2012	123360599722.35059
2013	131737629361.40727
2014	134668476150.21368
2015	119182529780.81677
2016	125141112045.18289
2017	137321995627.3535
2018	154276621414.07645
2019	159691089245.16617
2020	153532999274.88376
2021	176321181848.9208
2022	171906025966.4741
2023	206408037794.7033