Year	current US$
2000	85.1196169
2001	80.48557615
2002	71.5443104
2003	105.90420789
2004	129.75896101
2005	129.8805212
2006	144.53182548
2007	170.05246172
2008	151.70033238
2009	163.43926738
2010	233.67547478
2011	270.23481624
2012	280.45711217
2013	234.88568787
2014	222.80111631
2015	258.13476687
2016	198.47386999
2017	222.19944667
2018	230.80545543
2019	207.57533641
2020	171.19983767
2021	202.68102651