Year	current US$
1990	140887105.162658
1991	132823851.760484
1992	129570920.319204
1993	86659859.3253491
1994	95216056.9044068
1995	79029411.149608
1996	29956835.4581137
1997	60017750.5067496
1998	15429627.3242601
1999	-7827397.19733325
2000	168002877.510199
2001	234343520.927735
2002	138029544.647615
2003	223632601.651107
2004	271793764.612037
2005	535701226.681221
2006	413016795.883507
2007	509601637.161358
2008	153252651.868659
2009	-17838354.9735568
2010	-177569532.241544
2011	-561881541.487269
2012	-41250851.8106081
2013	230853827.162206
2014	255189172.901414
2015	214766061.02905
2016	92953342.5489883
2017	64281246.4519918
2018	185694796.442764
2019	47119492.0139034
2020	61428834.6864768
2021	251239606.173939