Year	current US$
1990	361291270.1335792
1991	404823168.727162
1992	351313941.3147879
1993	297277878.53717744
1994	308939288.65671647
1995	348883694.4891854
1996	438510744.4331032
1997	482374034.6090856
1998	1347670715.7142272
1999	1299473631.1709971
2000	1318658548.345557
2001	1284359565.7146544
2002	1323978623.5657685
2003	1426697869.6665132
2004	1532817530.460887
2005	1660459870.4854455
2006	1642539621.0785625
2007	1927525116.077425
2008	2443922104.711537
2009	2548052237.2023926
2010	2774182654.9174247
2011	3309305802.51538
2012	3742296710.075483
2013	4159019527.9711914
2014	4558843938.840016
2015	3724631271.7842975
2016	3889231903.9681263
2017	4083832705.449128
2018	4602378968.447346
2019	5188377136.726451
2020	5306725646.662868
2021	5670025579.943902
2022	6200334557.308681
2023	6637420442.811984