Year	current US$
2000	152.73987772
2001	139.3372361
2002	137.16983825
2003	149.5789713
2004	178.85715089
2005	212.72575661
2006	233.04844991
2007	254.68687582
2008	272.02062805
2009	255.36483881
2010	300.11296271
2011	343.15245507
2012	361.29053631
2013	398.15002324
2014	394.11149477
2015	391.08641305
2016	409.96724005
2017	455.51926284
2018	484.49550642
2019	449.19117841
2020	375.49087222
2021	459.45364425
2022	411.29171604