Year	current US$
1970	248.88625005995564
1971	261.01704072149107
1972	317.6949794669628
1973	523.2954507703413
1974	1404.9706228112332
1975	907.8518029961998
1976	681.651820937076
1977	646.925990580846
1978	760.3152777110832
1979	712.9772015297121
1980	542.9831817887906
1981	575.7314008723143
1982	515.408340508086
1983	477.69399586380774
1984	523.8141181249523
1985	387.35809064897217
1986	381.8880819781854
1987	420.43945054526847
1988	534.0960053378836
1989	516.8685138622186
1990	488.37193657314896
1991	538.8856056868749
1992	791.9019290586639
1993	747.9945873061985
1994	838.0308128514491
1995	846.0655749896242
1996	982.5414847369486
1997	950.7467993920654
1998	871.240842147917
1999	886.9600100564413
2000	841.9844345673929
2001	719.8501160913439
2002	811.4400286795363
2003	1017.8426858072196
2004	1085.2885763516927
2005	1159.1442187325492
2006	1121.0802671513231
2007	1353.6245330952906
2008	1411.9054357166724
2009	1324.4360150563184
2010	1528.8997574967543
2011	1783.7717637456474
2012	1855.2742140428104
2013	1780.6570284666934
2014	1740.3560523445667
2015	1641.480977397431
2016	1743.762868398463
2017	1852.992344277516
2018	1912.7868264794
2019	1745.7324153970962
2020	1763.1550707408287
2021	2244.1107306874706
2022	2061.3930413240755
2023	2089.910160719181