Year	current US$
1960	0.009905278896158238
1961	1.0558167537596501
1962	1.753359487906746
1963	1.731927505370078
1964	5.055875595840465
1965	5.476064013227587
1966	5.593374405025562
1967	5.728458892517038
1968	6.158609524679664
1969	6.606118461750714
1970	6.094245772739362
1971	8.125510642631998
1972	8.0509384390926
1973	11.571964762573307
1974	19.617259327242415
1975	16.33893390651417
1976	14.623890283379954
1977	19.25186189198174
1978	28.55004081992262
1979	19.24622169989282
1980	7.93742651324155
1981	13.508043108095187
1982	13.876787439610322
1983	17.99277373025735
1984	22.641750985479895
1985	36.043635455373334
1986	31.321802670997783
1987	38.06746411447311
1988	47.544810457524825
1989	44.187417162785756
1990	53.299521006575695
1991	43.41135675238397
1992	37.55398634669707
1993	34.655753351390295
1994	32.199311039701975
1995	34.11596994805248
1996	41.07889511400261
1997	30.595069345403907
1998	22.627759793621703
1999	23.54455100487879
2000	15.901177305940681
2001	22.087403119162353
2002	25.93804354626968
2003	27.40104139974029
2004	34.54307826941606
2005	38.62464157378382
2006	28.047543636713463
2007	31.95174674731307
2008	42.43303628319868
2009	48.16839200120249
2010	41.208175997827354
2011	37.15457342076088
2012	37.25076491216893
2013	34.754341291802476
2014	28.61403134320156
2015	42.8895487246658
2016	42.792967933553655
2017	43.019022317071375
2018	56.09383543242298
2019	39.80438498776861
2020	62.33755510659579
2021	42.517523690195894
2022	39.16423056957392