Year	current US$
1970	76579998.7986683
1971	77359999.56354497
1972	58060000.50529837
1973	118300002.316013
1974	124040000.38653609
1975	133820000.47713521
1976	143960002.53595424
1977	153389997.12094662
1978	268429999.4409084
1979	489059995.7481034
1980	435339996.4123957
1981	350199996.26278853
1982	449709994.08699596
1983	409729993.64137644
1984	307840001.1658666
1985	374850000.26226085
1986	831359989.6430972
1987	969910004.1016929
1988	1109159991.7411802
1989	1090639998.206869
1990	898289997.3671893
1991	1542840000.6480534
1992	988290017.6234536
1993	958849997.0622354
1994	1758060034.7518926
1995	1434080028.5339346
1996	1320010013.3512168
1997	962739992.6371877
1998	1461970029.3727224
1999	1166200012.8179786
2000	1129159977.3913627
2001	1156819998.800754
2002	1190020010.9481819
2003	1097019998.5504146
2004	514380000.5912786
2005	632600004.4345851
2006	624460008.1443789
2007	362310002.08854616
2008	1043490001.6784673
2009	1177269996.643066
2010	2276049978.256225
2011	2437509991.1689754
2012	2417010025.5012517
2013	2046730046.7491155
2014	1853600030.8990476
2015	1765100039.9589536
2016	2051389997.005468
2017	3188620045.185089
2018	2741500055.7899504
2019	3132930067.0623794
2020	3101469974.517823
2021	4726610058.784483
2022	5500139913.558964