Year	current US$
1996	1645758860171.7598
1997	1491945786445.1067
1998	1326003573033.7646
1999	1421013420259.094
2000	1541724262353.9033
2001	1300293020667.0884
2002	1192295625478.8672
2003	1297831754235.0242
2004	1434460230621.532
2005	1426001551771.2449
2006	1372028755699.972
2007	1389651221993.4749
2008	1462660517086.836
2009	1339887611248.6843
2010	1519088946387.453
2011	1594474663419.3347
2012	1561551737538.4448
2013	1316244379643.19
2014	1262057738147.2087
2015	1252533266696.7444
2016	1437417642343.214
2017	1444225854185.2683
2018	1468180137611.6572
2019	1493005909992.8684
2020	1424040945073.448
2021	1487753117092.0322
2022	1210821889883.799