Year	current US$
1970	61059999.573975824
1971	67540000.00841919
1972	57210001.40160326
1973	48309999.79935595
1974	55229998.294264026
1975	77030000.64007933
1976	80399998.69465828
1977	88929999.9047071
1978	137450001.0162592
1979	244770004.74743545
1980	291340002.7435274
1981	262050002.85990524
1982	221429999.2937595
1983	184729999.17715797
1984	152690000.20436943
1985	208789999.7942148
1986	214320002.67319387
1987	281169999.582693
1988	430749996.7720359
1989	422380000.6452948
1990	359439999.58410865
1991	478600009.17501736
1992	506649996.3179234
1993	343070001.51276594
1994	475500000.7189812
1995	491500003.73460364
1996	503660006.00904214
1997	630909999.1694094
1998	654810000.0116982
1999	648999990.9456819
2000	978330011.3864242
2001	1045510002.9911847
2002	880820004.3104597
2003	1164540001.1241436
2004	2216119991.9283395
2005	1561389998.9724164
2006	2226000012.8336253
2007	1944730009.1348586
2008	2227480013.6554995
2009	2239820024.7474
2010	2412750013.2285056
2011	2795579988.7664604
2012	2497490016.520023
2013	2597660003.622993
2014	2940720041.522756
2015	2906289999.406786
2016	2372990014.8101144
2017	2399640051.8305593
2018	2310180014.332756
2019	2353510003.214703
2020	2019460004.4582052
2021	1361720003.0088441
2022	1138770003.6913166