Year	constant 2015 US$
1990	153617168.83519426
1991	135370813.08943143
1992	180850596.45934132
1993	214123583.00901595
1994	265327703.2928091
1995	250948560.10510617
1996	241837205.21755144
1997	246441933.56625065
1998	245001450.0524817
1999	308543046.115004
2000	390167980.59816355
2001	481747454.8625524
2002	609510370.2824582
2003	614502031.4827489
2004	647810100.6253186
2005	624963497.6549832
2006	576030098.3706422
2007	495768074.146923
2008	631482940.6405025
2009	797112564.491255
2010	1149768598.0337029
2011	1288216369.816188
2012	1331325350.693978
2013	1154068785.2275872
2014	1059889256.2643125
2015	1234615742.899389
2016	1371297696.594483
2017	1352322697.1217203
2018	1346023685.516078
2019	1246138090.564978
2020	973914212.8481678
2021	1168284094.2407618
2022	1505174402.0847247