Year	current US$
2000	132.38001021791985
2001	127.75517880520286
2002	108.0768137819967
2003	112.48615294219486
2004	128.4510267220684
2005	153.00139598358555
2006	181.94819578273425
2007	220.78096435586798
2008	261.0304226056779
2009	267.5738334320316
2010	322.2191537805256
2011	369.28779752082943
2012	369.4619152654524
2013	395.87768774736105
2014	397.47793953912213
2015	362.8755409265089
2016	343.41206514899
2017	381.1645445476139
2018	343.11164480104196
2019	332.33643803120486
2020	326.3120390985367
2021	349.4223551596367