Year	current US$
1970	178979999.49008226
1971	192639999.18662
1972	241220000.85562462
1973	267709999.96550378
1974	351800001.0401011
1975	418019999.7033925
1976	487669997.1631168
1977	539369995.7244098
1978	726209997.6204336
1979	809670003.3843517
1980	916759994.9073044
1981	983360001.657158
1982	966810002.4927406
1983	864859996.7006593
1984	874149998.3537942
1985	848770000.7632375
1986	1115399999.1882591
1987	1302629994.995892
1988	1361409997.4222481
1989	1521110001.444817
1990	1811030003.4210083
1991	1671810001.8259134
1992	1650279999.4926898
1993	1689759996.5985863
1994	2061650007.5273216
1995	1957949993.120506
1996	1944910006.2977521
1997	1774850003.6820767
1998	1610830003.3379347
1999	1590019989.1366065
2000	1439710000.5056713
2001	1393200005.1587818
2002	1402690001.2362747
2003	1436330003.2652915
2004	1686820004.0739024
2005	1659230005.5157394
2006	1860800000.7178628
2007	2384570015.164092
2008	3187310003.4017105
2009	2998329999.392852
2010	3269020009.454339
2011	3265249994.5312734
2012	2957969996.666536
2013	2944760006.4575677
2014	2535339992.15439
2015	2060960001.0868163
2016	2000849998.6492095
2017	2265789997.1101437
2018	2335040005.0580497
2019	2184419994.803146
2020	2768439980.77698
2021	3020479997.3182373
2022	2386290002.3385878