Year	current US$
2000	284.17423715309167
2001	283.9915005787568
2002	319.7478612368843
2003	368.4192352132876
2004	420.04160880510483
2005	463.4662520980882
2006	491.38872932016955
2007	567.1867558709221
2008	626.3132333120948
2009	597.9017314740298
2010	604.7028774984296
2011	640.1671952176025
2012	635.0921536381124
2013	670.260633941318
2014	697.9159344045197
2015	659.1174506002658
2016	685.4007855465237
2017	739.8430316643412
2018	789.6762707636002
2019	804.1552909849037
2020	836.4395597444876
2021	956.4325312583762