Year	current US$
1991	667253545.374361
1992	881851198.448932
1993	764356494.460703
1994	1008083703.2029
1995	1088873037.29256
1996	968992179.794482
1997	909425902.518714
1998	875432659.092287
1999	709088846.055837
2000	861638527.332563
2001	565032230.315336
2002	665308222.236683
2003	945461382.099487
2004	1587979491.37942
2005	1725835466.14416
2006	2287644660.52995
2007	1782710961.58665
2008	1787303658.33506
2009	958004610.451864
2010	1492156773.5194
2011	1130319529.28902
2012	1345807346.5967
2013	1793578166.94354
2014	2288737753.43228
2015	1285484687.95817
2016	18005000.2611152
2017	988386267.254936
2018	1015844835.45956
2019	1027087051.00393
2020	1221013975.47563
2021	-131963222.496039