Year	current US$
1970	5340000.0389665365
1971	5979999.9669194175
1972	19300000.35092239
1973	17129999.674856666
1974	11110000.163316729
1975	31499999.858439002
1976	40080000.58494507
1977	50679999.934509344
1978	81689999.41088259
1979	181700001.0516494
1980	389099992.4018979
1981	368260003.2687192
1982	310140001.10700727
1983	315729996.06467766
1984	356739998.28845274
1985	379639999.10652614
1986	357410002.3768842
1987	348960005.0114095
1988	415140003.6085397
1989	414659996.2171166
1990	390129996.5195358
1991	587569997.2230942
1992	584419996.2504208
1993	559449995.1284379
1994	891450006.5874308
1995	578559999.1008645
1996	274469998.43977386
1997	265050001.2841076
1998	232559998.69480735
1999	245240000.2088398
2000	422099994.88294125
2001	452959999.9040365
2002	471389999.4120003
2003	395040001.0850281
2004	347610002.2587925
2005	112770000.76323749
2006	73019999.24518168
2007	112819999.92951748
2008	138599998.91370532
2009	147609998.7626075
2010	186849997.31369314
2011	198210001.05515113
2012	246377501.41241115
2013	162651268.4660556
2014	14539099.786430594
2015	177700523.9976571
2016	281323345.91448337
2017	338298368.304968
2018	209234658.35861868
2019	273624328.6759127
2020	273525335.84024924
2021	489909638.8369798
2022	294097200.1552581