Year	current US$
2000	41.70374838065082
2001	43.258357640614655
2002	42.93878596070461
2003	46.52902408445779
2004	52.430268926786304
2005	62.2436284012385
2006	69.33291983059375
2007	78.83475777911215
2008	90.1289187414195
2009	91.93800663774468
2010	104.51041022771393
2011	122.2627940860009
2012	130.90994327114373
2013	136.8236010193077
2014	137.87099276663446
2015	131.1018701406487
2016	131.28738061137412
2017	143.65732630876516
2018	154.04061218552948
2019	157.7635418802631
2020	157.1807074496031
2021	178.0245295702754