Year	current US$
1980	100.582708937593
1981	139.236633699793
1982	117.479566604423
1983	55.594384470575
1984	54.4721765976924
1985	81.1857978349472
1986	65.0574139161929
1987	45.1716801636213
1988	50.7871255258977
1989	63.2161436545167
1990	70.1102851350132
1991	52.4616049245393
1992	37.6671907581978
1993	15.3387677652168
1994	50.4201305009093
1995	71.3377824103801
1996	46.6496400445239
1997	60.7231574323813
1998	71.6966272975539
1999	51.5775201701012
2000	78.6929103777805
2001	114.058622822021
2002	100.490593742794
2003	121.3541701258
2004	404.014855677953
2005	296.634987963597
2006	317.018516985722
2007	467.210207659323
2008	978.026262619265
2009	216.780308006925
2010	3791571.42515427
2011	8646943.74662293
2012	9523567.7734663
2013	9373865.37802931
2014	6950230.09119856
2015	2610983.44981346
2016	2281750.39424489
2017	145.252931207913
2018	134.359657306537
2019	86.4335224729581
2020	72.1197962831207
2021	154.862252601542