Year	current US$
1980	1400.6920027490103
1981	1569.251986897194
1982	1452.7896202143788
1983	1534.07845715538
1984	1925.2170831118199
1985	2142.691538628292
1986	2522.068095838588
1987	2745.6905655472697
1988	3098.439561731066
1989	3464.8801175211393
1990	4073.2646265987564
1991	4253.914268609142
1992	4603.702185999686
1993	4608.599312324202
1994	4740.2959843764565
1995	5008.027430376263
1996	5123.686514096272
1997	5184.337012401906
1998	5593.748413550141
1999	5825.067307728313
2000	5846.975502147915
2001	5558.069371163259
2002	5562.457122726346
2003	6055.967956524237
2004	6494.600348678856
2005	6866.092387236861
2006	7618.905419506128
2007	7975.792540591548
2008	8528.682084704293
2009	8259.322337990247
2010	8672.215667857286
2011	9110.751810220281
2012	9231.57625405725
2013	9542.713574257792
2014	10006.551252746991
2015	10292.733530008829
2016	10591.875000393647
2017	11280.593034119447
2018	11585.691871039953
2019	11714.897549175701
2020	8356.678555388717
2021	10213.11543844792
2022	13030.928950072741
2023	13980.094082831532