Year	current US$
1963	0.0416201898566708
1964	0.0404131834939727
1965	0.6274263614121839
1966	0.190131421669879
1967	0.03685426634756736
1968	0.49981792559869626
1969	0.3456667271241773
1970	0.702590193993486
1971	0.453313562157533
1972	0.5953723822911621
1973	1.5767131016571074
1974	1.7896855854182143
1975	5.961353126822315
1976	8.843262858049785
1977	7.704835967680684
1978	8.01908100700919
1979	12.336375240066781
1980	19.40966779516468
1981	22.513011164424938
1982	25.440919400905923
1983	27.125229721443624
1984	35.5407124827937
1985	42.61879523687031
1986	73.40463985777531
1987	71.12480958801889
1988	67.8573550109137
1989	68.15396318801766
1990	74.2243612818153
1991	97.51457717910834
1992	96.93301541723199
1993	118.53974110657593
1994	138.93258291245309
1995	131.66873745957187
1996	106.23374116570808
1997	108.50941302257029
1998	94.12305032408017
1999	114.92320836894166
2000	80.2102128791399
2001	90.52871789446814
2002	96.95532569003325
2003	114.80759660454346
2004	110.97076306197778
2005	118.75058854142915
2006	137.27237347970367
2007	87.51287609391665
2008	99.4436956954471
2009	100.71981149336285
2010	137.8281964743103
2011	166.33232191770583
2012	224.15740786732766
2013	187.6829024059329
2014	177.41394376592876
2015	130.88040047048182
2016	68.82192922027299
2017	156.77385089889978
2018	141.6094536238807
2019	232.80722249520173
2020	262.4445706482073
2021	163.79715965833594
2022	248.49991685324522