Year	current US$
1970	176000000
1971	175000000
1972	237000000
1973	103000000
1974	38000000
1975	103000000
1976	140000000
1977	70000000
1978	61000000
1979	24000000
1980	21000000
1981	12000000
1982	-12000000
1983	-6000000
1984	-15000000
1985	-18000000
1986	-20000000
1987	-19000000
1988	-24000000
1989	-34000000
1990	-29000000
1991	-24300000.01192093
1992	113000000
1993	146000000
1994	124000000
1995	120000000
1996	418000000
1997	240000000
1998	335960005.2870805
1999	560599993.931129
2000	427070008.25926626
2001	422970005.37253916
2002	400259996.01557845
2003	233249998.1224535
2004	223350001.21593484
2005	184719998.91102314
2006	247720007.0023535
2007	164689996.54054642
2008	153849998.3996153
2009	170100001.96099228
2010	233330005.11117336
2011	166799995.61607793
2012	211729995.87655112
2013	183490004.6512484
2014	232510003.0899046
2015	295840003.66926163
2016	232519994.51220083
2017	302109996.5665492
2018	256240001.60396132
2019	261660006.9999699
2020	298380004.2159858
2021	382300000.15348184
2022	9305279802.799225