Year	current US$
2000	36.64045700845521
2001	37.78008571040937
2002	39.589667625905165
2003	43.43619911919754
2004	50.36466574182726
2005	59.06423815721803
2006	67.35886411610886
2007	78.43118439184622
2008	94.97465006518408
2009	98.48405696782638
2010	108.43513205157272
2011	128.305872976657
2012	138.2006043818566
2013	149.23267676606548
2014	153.62149537567376
2015	141.37021792585043
2016	144.45468610703065
2017	162.08180272292995
2018	175.7677903915099
2019	181.60034848254585
2020	180.82034473795022
2021	205.58420967979285