Year	constant 2015 US$
1977	120269546.59734224
1978	124959162.18119209
1979	132948241.97728395
1980	139422743.2728278
1981	144820306.3144409
1982	150479595.38589373
1983	152757899.02269545
1984	172061266.3710399
1985	189618363.3235683
1986	208810175.3149319
1987	217773219.18927988
1988	232678731.118186
1989	243546797.24251506
1990	259585025.10384235
1991	273907016.70392543
1992	287049095.8744031
1993	304558996.3297473
1994	324205610.9303406
1995	327985621.295731
1996	345426872.3006255
1997	367072902.14556825
1998	359418488.420419
1999	365390990.6095489
2000	388328488.24107796
2001	385603963.17635274
2002	394730049.4955189
2003	399968860.68296695
2004	428372570.8065589
2005	472299637.91310483
2006	468858584.2093102
2007	484583598.9529604
2008	549579868.897045
2009	541632622.359821
2010	555940412.1048422
2011	564041047.2579149
2012	564744704.125025
2013	579873326.767893
2014	604565675.9765443
2015	611396296.2962962
2016	635655295.8489833
2017	629867289.0579371
2018	652671778.3792198
2019	671455984.2585378
2020	579710284.3230746
2021	575067865.236409
2022	638130966.655828
2023	679912738.4358186