Year	current US$
1970	3406399996.5936
1971	3632219011.5716887
1972	4133763714.136475
1973	5201521626.1194515
1974	5844443037.261494
1975	6699194173.917737
1976	6071967188.388402
1977	7450984904.019905
1978	8929952162.913935
1979	11241403699.702217
1980	14073370203.692974
1981	12723604509.787216
1982	13133591139.631977
1983	12616837508.473953
1984	13372590009.104301
1985	14624403150.977985
1986	18859334799.689034
1987	24204346276.063828
1988	26431070240.247047
1989	29604921794.552357
1990	43136975066.724525
1991	40549218897.85104
1992	53829816568.82495
1993	44931316615.93703
1994	44718064345.1776
1995	49107941360.429886
1996	51423313145.05361
1997	53219609921.040085
1998	58457641901.34465
1999	59784067301.31952
2000	57728114008.52574
2001	59933593554.10888
2002	64777307439.68395
2003	76970739188.97075
2004	85893016630.51949
2005	93099468087.09773
2006	104468121564.29968
2007	125541112356.3224
2008	130021992501.76413
2009	108177020518.40231
2010	111468279536.36354
2011	117593504025.76323
2012	107120092510.54863
2013	109060663670.91205
2014	115233739011.1583
2015	101499230880.4257
2016	103441782851.7692
2017	114804493330.45316
2018	124554275487.28053
2019	121307972389.52768
2020	93465424753.24506
2021	114002715320.92368
2022	138188969901.75943
2023	155044224885.01627