Year	current US$
1981	39060172602.98064
1982	39008279783.34135
1983	31739264653.70972
1984	30684794336.46859
1985	31254551760.10359
1986	28509264578.900143
1987	30272406235.36502
1988	33745649930.441032
1989	33240620875.01319
1990	33580579605.924286
1991	35831305017.47636
1992	34228368035.54749
1993	36135583361.28484
1994	44188260795.033066
1995	61852119919.45726
1996	76158320246.08107
1997	84314825098.5092
1998	90149293273.652
1999	45340650118.718765
2000	52918833308.78933
2001	53503019470.94873
2002	68787055981.56319
2003	73149546408.55042
2004	80219564202.70906
2005	92777734076.88327
2006	109370358825.644
2007	125662213402.86331
2008	150210551269.59903
2009	142783048412.22128
2010	164333288564.50717
2011	185721956476.9359
2012	202937296346.48935
2013	214701800386.88895
2014	228673075039.67117
2015	223645293549.36523
2016	208713725464.13702
2017	201860657361.92654
2018	215257804474.84756
2019	221754165759.43436
2020	224300369041.6501
2021	241007052565.66608
2022	256560430046.9292
2023	228368596260.18192