Year	current US$
1996	-205444218.620603
1997	-352106085.047903
1998	-447941423.924577
1999	-203061943.535198
2000	-184193924.295976
2001	-111046324.652041
2002	-73575408.5569422
2003	-110914727.475071
2004	116866782.955188
2005	165133168.266288
2006	207460542.247266
2007	465477797.360225
2008	711549646.539108
2009	247011292.741947
2010	674135949.917054
2011	709323951.188824
2012	1025768042.10417
2013	1182508826.64459
2014	1289343127.03455
2015	358551431.214525
2016	691868890.402594
2017	750598497.973042
2018	604457458.291097
2019	768714566.71389
2020	841720974.473351
2021	942611233.094525