Year	current US$
1970	29549999.542534355
1971	48139999.531209454
1972	72660000.09700656
1973	123069999.17887154
1974	128839999.94024634
1975	125469999.31894244
1976	106019998.90245505
1977	167469995.94569203
1978	417449998.8518651
1979	648299996.5194619
1980	668770006.7032123
1981	579059991.9501692
1982	715509994.635359
1983	578989998.8416574
1984	535630006.3338127
1985	699829996.0922456
1986	1155979994.7403367
1987	1347490005.3106244
1988	1816469968.2369835
1989	1660420019.5241725
1990	1474919990.7854204
1991	1639450007.2784736
1992	1312709997.7731702
1993	1683099977.9999251
1994	2422399998.5400596
1995	2446610012.5946107
1996	1827369996.0671356
1997	1448440002.474934
1998	1684210017.7612162
1999	1755669977.2700665
2000	1809389992.8852909
2001	1555680003.367364
2002	1342729995.3810868
2003	1333309987.7201018
2004	1265690008.9550762
2005	1775400027.3011618
2006	1513630003.3573065
2007	1985089978.3167982
2008	1611669995.306059
2009	2126719988.6441238
2010	3075119967.0433993
2011	2892500012.6361847
2012	3494270022.8691087
2013	5744900083.303458
2014	2637210023.8502026
2015	2511230024.4569774
2016	2750219968.9149857
2017	3653450049.7877626
2018	3546480057.448154
2019	3767370043.51616
2020	5019369991.302491
2021	4386480022.013185
2022	4866310015.872121