Year	current US$
2000	28.00971488707379
2001	29.231029325525643
2002	29.204743679241705
2003	32.10381018190171
2004	36.336578002996646
2005	42.49665609009325
2006	47.52679873472185
2007	54.72404509294394
2008	62.700458325756436
2009	62.33146305697539
2010	69.98491921077483
2011	79.68919624772366
2012	84.52286890683737
2013	90.12575493932056
2014	90.12713881868761
2015	85.14231670241085
2016	84.70660910537559
2017	89.16235657114339
2018	93.49063488276596
2019	95.4146090263375
2020	93.89902128217916
2021	106.3858616824955