Year	current US$
1990	498.97183402641565
1991	507.4698609513714
1992	485.9722894145311
1993	461.42290132455065
1994	434.7132006573658
1995	442.269322551831
1996	445.2294414079142
1997	454.3822757122252
1998	447.89526146452647
1999	448.6692430982882
2000	464.58442520765976
2001	473.69754774014194
2002	487.3171466501967
2003	520.6792240413218
2004	593.5775710698882
2005	668.6244138014556
2006	728.9405156511307
2007	809.5488022154691
2008	924.1122200320815
2009	989.0637352626834
2010	1051.9544482118083
2011	1110.3710451111417
2012	1200.3327885192134
2013	1283.5471725077543
2014	1365.6756111035065
2015	1361.1261557485216
2016	1332.475777342681
2017	1314.3884333856815
2018	1386.1821356596265
2019	1428.4202645638688
2020	1392.5112421795768
2021	1460.543220995822
2022	1538.1156526087798
2023	1531.3383982790722