Year	current US$
2000	41.12958238547881
2001	40.588944893922594
2002	39.46452272453751
2003	45.431753433339566
2004	53.62877387604561
2005	63.72929842762118
2006	76.80474743887169
2007	95.49430393803871
2008	119.92002111869301
2009	132.76898219011446
2010	155.98887389427898
2011	186.0619861765675
2012	202.2477553021028
2013	222.25542068368716
2014	235.70386187697156
2015	235.99166200580456
2016	230.22425958797803
2017	248.33922031357358
2018	261.357127144699
2019	267.78902204582954
2020	276.9787648347235
2021	312.1820695519932