Year	current US$
1970	163200000.4649162
1971	159999998.6886978
1972	232199999.21321866
1973	260869998.81267545
1974	355659999.3705749
1975	414910003.72171396
1976	425169996.3808058
1977	391099999.6066094
1978	482179999.2322921
1979	606570004.2434036
1980	827819998.1600046
1981	824079993.7248234
1982	802069996.4761736
1983	720999999.1357325
1984	829039986.1931796
1985	789389998.7339976
1986	1088360002.5773046
1987	1337460007.0118914
1988	1479039990.6635294
1989	1698419993.4005733
1990	2393909998.714924
1991	2122920006.3347816
1992	2423949970.4837804
1993	2415899992.8236
1994	2432089974.999428
1995	2089819962.9783633
1996	1718009986.9072447
1997	1670800001.8596644
1998	1105250009.1195104
1999	1111530006.9134684
2000	978690002.7953087
2001	745350002.832711
2002	1688309987.127781
2003	2580359993.2491775
2004	2393449992.2692785
2005	3989039991.3489842
2006	4357350035.980341
2007	2672279980.003833
2008	2020600023.4186652
2009	2361100063.4729867
2010	2479990021.0723286
2011	2872590060.5767965
2012	2567700007.075444
2013	1458199992.660434
2014	1497929990.3288484
2015	1238570005.4150076
2016	1105570001.5239413
2017	1728220000.192523
2018	1829860031.9176924
2019	1997349989.6004798
2020	2594010010.153054
2021	2219240030.4675093
2022	2619630031.958222