Year	current US$
2000	281.43957563852814
2001	273.63547277488647
2002	235.6893351938807
2003	246.54020584764993
2004	279.91783878139046
2005	338.1086328130269
2006	393.8739692865963
2007	469.9851572472624
2008	539.9528326848665
2009	535.5850280953416
2010	635.7491381626998
2011	723.0914604662693
2012	722.1256656168965
2013	754.8300927328469
2014	759.804874615752
2015	678.2960928577356
2016	650.2161485082004
2017	734.8991418823174
2018	674.9370690857216
2019	657.6646638553017
2020	597.9605584877306
2021	656.2994327870133