Year	current US$
1975	176232617.38617602
1976	239383720.2371519
1977	287627954.7267234
1978	337847139.45209867
1979	353495319.9607496
1980	467638966.1549375
1981	606382980.3361251
1982	724734044.4806759
1983	490957448.114249
1984	542021277.1963896
1985	484840425.53191483
1986	317553191.48936164
1987	522872340.4255319
1988	523404255.3191487
1989	556382978.723404
1990	474468085.106383
1991	534308510.638298
1992	603989361.702128
1993	581914910.383186
1994	621808568.519415
1995	634042602.37476
1996	612766010.411955
1997	634840484.626109
1998	651861767.140469
1999	716136582.232745
2000	756759707.446808
2001	765732632.978723
2002	945395265.957447
2003	906682659.574468
2004	1247797765.95745
2005	1416223404.25532
2006	1605239361.70213
2007	1700930851.06383
2008	2030053191.48936
2009	1740957446.80851
2010	1905053191.48936
2011	1778457446.80851
2012	6044680851.06383
2013	7051329787.23404
2014	6764414893.61702
2015	6592287234.04255
2016	7499734042.55319
2017	7796010638.29787
2018	7938563829.78723
2019	8440159574.46809
2020	9535106382.97872
2021	10531382978.7234
2022	11117287234.0426
2023	12062765957.4468