Year	current US$
1970	50260000.39838253
1971	68749999.85098848
1972	74300001.35302547
1973	78120000.00476837
1974	161479999.37832353
1975	167159998.3498455
1976	241480004.57882857
1977	205950000.87469807
1978	226600000.28833747
1979	274010000.05006796
1980	254040002.554655
1981	158900000.45299536
1982	295639996.3796134
1983	252199999.83906746
1984	229390002.6082996
1985	217129996.35934815
1986	231250000.56624416
1987	335400000.21457624
1988	446919996.8576428
1989	469119989.0673163
1990	740409980.8335305
1991	578769987.8513817
1992	1035869975.0006196
1993	346379999.220371
1994	465689987.5402455
1995	409979995.13149285
1996	699810015.6188017
1997	653130013.3466717
1998	277609999.6566772
1999	320360006.74963015
2000	243240001.26123425
2001	400210003.3462043
2002	195389997.39103016
2003	295089997.0494212
2004	274460000.872612
2005	2356399993.5388618
2006	767920016.1844497
2007	2604310041.2190013
2008	2353740046.2180376
2009	545339987.6356126
2010	459319992.0505289
2011	578719999.3133551
2012	548750001.1920923
2013	921960003.2567981
2014	1349750004.410744
2015	1281250023.4842308
2016	2499849993.824959
2017	2899420015.3946867
2018	2766450025.9160995
2019	2852710009.217263
2020	3161740005.1951413
2021	2996690042.197704
2022	2888109962.165356