Year	current US$
1970	94600000.7260591
1971	92359999.20777974
1972	112810001.01380046
1973	143230001.17763868
1974	188100000.30696395
1975	214500000.79348692
1976	270429997.6434557
1977	331589993.17325664
1978	382129998.64295137
1979	456570000.6913395
1980	567420003.6041439
1981	553160006.6274403
1982	519340005.9025735
1983	315620000.3158301
1984	380379997.85318977
1985	299579999.4450064
1986	462900001.93007284
1987	601360001.9793959
1988	679910008.9352573
1989	688709995.6832827
1990	851169995.7065289
1991	602700003.247708
1992	675690003.9110334
1993	508809992.00791115
1994	512010000.60141087
1995	751340002.1176785
1996	767200004.8104674
1997	658469998.707995
1998	638190005.5129079
1999	471869997.043163
2000	514210005.868226
2001	837340003.4625088
2002	740630000.5596125
2003	633409996.928647
2004	402470000.22232556
2005	935900004.4390558
2006	658679996.6543915
2007	802369988.0167838
2008	899299992.0621512
2009	854030003.7823611
2010	670310008.7270141
2011	607010002.64287
2012	454709995.29398984
2013	409430005.2281469
2014	367079999.8193979
2015	361280002.63310975
2016	412910004.64186037
2017	353080004.1090697
2018	368870003.07254493
2019	296639999.7789413
2020	301470002.4314226
2021	233590001.60917652
2022	261680005.15736645