Year	current US$
1977	6610463886.842013
1978	8958874858.245338
1979	12187840995.01275
1980	16673572554.7697
1981	16358699274.220964
1982	16065311840.170265
1983	17824714291.730297
1984	16441267313.83355
1985	17033099904.53081
1986	13872101488.399498
1987	14248181175.915966
1988	10031000262.603582
1989	9731542050.381212
1990	14877797618.377167
1991	14747567479.344713
2005	54297579084.306404
2006	66084752439.15356
2007	79514908744.96754
2008	102132238613.35825
2009	72079472277.42953
2010	91069845908.33365
2011	109140863318.87885
2012	110667745201.39357
2013	107061980975.0605
2014	106763438432.8275
2015	73211521851.30309
2016	71882846078.91228
2017	75016517746.18436
2018	78737730236.80006
2019	74425891020.11075
2020	54963993099.45164
2021	72036430814.26251
2022	100314280455.08727
2023	98900814764.5238