Year	current US$
1990	-43570079.6075021
1991	-26447596.6747226
1992	25859145.8794115
1993	94398570.311378
1994	132652116.110609
1995	179974738.475976
1996	347690901.09417
1997	297387851.686159
1998	288376789.579309
1999	443960146.402256
2000	389442241.747635
2001	382331258.745366
2002	558936988.43111
2003	696636032.498893
2004	905713731.968645
2005	230205418.938673
2006	-2085458.55950715
2007	233598098.791511
2008	126076344.013833
2009	232683038.147278
2010	246202573.69215
2011	222872003.605191
2012	239736624.262392
2013	382704826.40905
2014	583105141.839158
2015	571743668.437701
2016	483195030.067841
2017	412377590.707987
2018	432787956.580667
2019	273066744.072637
2020	190931848.088245