Year	constant 2021 international $
1990	3564.81252609454
1991	3691.4099372459746
1992	3695.8148141929296
1993	4582.157529250324
1994	4500.733524854806
1995	4327.427356019367
1996	4502.548789700083
1997	4315.717581663299
1998	3915.510626030847
1999	4478.312631529983
2000	4566.994822379332
2001	4671.551371735177
2002	5337.86911016431
2003	5664.325795531605
2004	5964.869148478147
2005	6451.272041603259
2006	6719.959542993243
2007	7404.571701512279
2008	7286.41904455197
2009	7002.8852667632855
2010	7490.781504530679
2011	21254.42230153354
2012	18068.76368397209
2013	17066.843558752716
2014	16883.13040442459
2015	14835.420275517927
2016	15888.555931114039
2017	16089.137835370411
2018	14992.338729593162
2019	13613.376147790796
2020	13783.591311342447
2021	15037.394331944231
2022	15444.05326360783