Year	current US$
1970	34880000.1833588
1971	51060001.080855705
1972	77099999.24153087
1973	66519999.276846685
1974	124579999.69273812
1975	134700000.42952594
1976	113730001.25586991
1977	135489998.36109582
1978	182610000.5768238
1979	244200000.13709065
1980	184940001.21206048
1981	388699999.0940098
1982	223289995.18230563
1983	271549997.8587031
1984	248489994.47934327
1985	255299997.0428646
1986	334030003.9574504
1987	379829998.7539646
1988	517670000.47862554
1989	483679997.9954954
1990	940220008.9097028
1991	1695130003.9067867
1992	1417580003.011972
1993	1389249992.54942
1994	2026829995.7215781
1995	2329100027.4717813
1996	2388110007.449986
1997	2609670017.48085
1998	3002500014.4243255
1999	3292709980.368614
2000	3539719988.8378377
2001	3819299963.3252635
2002	2560559994.757176
2003	3578129954.2542553
2004	5143310018.451889
2005	2980750022.4709516
2006	3763559995.271266
2007	3671010019.555689
2008	3995170004.427435
2009	4263640052.3670015
2010	3528980005.413295
2011	8277289953.798066
2012	8836490112.84858
2013	7159279981.765897
2014	7197460033.761344
2015	6010280036.415903
2016	7719969864.154238
2017	6464719913.51247
2018	5487579981.267453
2019	4401680006.623267
2020	8143940003.640949
2021	8393900087.088355
2022	14430940184.84652