Year	current US$
1980	1704793788.0215807
1981	1268734010.0435402
1982	1109299701.6989987
1983	1034886235.257158
1984	885220879.7398726
1985	830115794.5415998
1986	1022542547.5879549
1987	1068825357.349316
1988	1154170628.3967931
1989	1264270497.0532017
1990	1215303139.2316608
1991	1318535806.3096747
1992	1475205065.6132824
1993	1515171424.1822028
1994	1617132599.4889038
1995	1777948903.871842
1996	1811265635.7974195
1997	1771936400.517192
1998	1602303553.869519
1999	1602755470.020054
2000	1597766399.974178
2001	1460499982.5186625
2002	1546274870.272477
2003	2139525237.387255
2004	2630327849.9458103
2005	2928965079.361097
2006	3630154009.8417344
2007	4406968679.937264
2008	4618182718.267246
2009	4609153402.27765
2010	5519309341.427646
2011	5703110578.388431
2012	5224429911.453468
2013	4516479278.364525
2014	4851942697.549094
2015	4009342643.849469
2016	3753721654.575125
2017	4335454250.281849
2018	4909459328.14274
2019	4565372504.914039
2020	3564380963.9970007
2021	3963389446.702766
2022	5070281050.06781
2023	5361856646.348591