Year	current US$
2000	105.26150396746621
2001	106.82559114682995
2002	116.95728942222368
2003	134.80503981758378
2004	154.04198705924378
2005	167.38933731263447
2006	177.9235504960718
2007	204.58180022895715
2008	236.10128534430072
2009	225.41159074367815
2010	225.146804773338
2011	235.55746547753552
2012	232.71517146446544
2013	245.8442651366694
2014	259.7684647354439
2015	241.39332698256317
2016	248.74826437803932
2017	270.71227205770793
2018	284.6517958919688
2019	271.48046544002676
2020	232.3337125759835
2021	240.82748025417996