Year	current US$
2000	27.49852495
2001	27.77636352
2002	28.62028413
2003	28.60725853
2004	30.23759736
2005	32.63450787
2006	37.75614697
2007	45.12922426
2008	53.29285547
2009	53.69822337
2010	61.56206755
2011	70.61264811
2012	85.62561695
2013	87.48125547
2014	84.78124757
2015	83.56513865
2016	77.21706865
2017	84.23401674
2018	109.6104367
2019	120.91410529
2020	99.34372642
2021	146.92575256