Year	current US$
1970	200949998.69726598
1971	230140000.78663245
1972	267140001.22994193
1973	326719999.2854148
1974	479369998.49416333
1975	588470002.0086019
1976	815990004.077553
1977	755400000.7454305
1978	1057259997.6677455
1979	1152679996.613413
1980	1442640002.0085268
1981	1491829994.885251
1982	1367409995.1125677
1983	1396600005.4255137
1984	1349069991.0800912
1985	1224739998.8062677
1986	1540060006.1193109
1987	1697549989.994615
1988	1668060007.1735687
1989	1890570003.3195317
1990	2502299995.191396
1991	2240420000.970363
1992	2161270010.5104594
1993	2234919993.2310734
1994	2535540013.0599732
1995	2417120014.9245567
1996	2374960023.0008364
1997	2200430011.3320346
1998	2031760006.159544
1999	1860980018.9137468
2000	1747030013.9188762
2001	1747189988.5237207
2002	1870660021.424294
2003	1903700001.0609636
2004	2159229986.473919
2005	2085429982.066156
2006	2279279974.5798116
2007	2907799982.54776
2008	3736150009.6321106
2009	3597200010.299683
2010	3957520000.4577637
2011	3845949978.8284297
2012	3735980009.7942343
2013	3766680026.8888474
2014	3213590000.3910046
2015	2801969990.491868
2016	2663570009.8872185
2017	3258539996.6239934
2018	3522149985.790254
2019	3591990024.5666485
2020	4976689963.340758
2021	4911099954.415113