Year	current US$
2000	19.62353503
2001	17.9502702
2002	19.97349406
2003	17.66605237
2004	20.8479574
2005	22.408774
2006	32.95147846
2007	46.83931378
2008	68.70681628
2009	53.31640876
2010	65.03988187
2011	80.87988978
2012	103.23864999
2013	101.03916673
2014	101.33734023
2015	94.41578775
2016	94.62895299
2017	83.80058078
2018	87.26955087
2019	93.16243959
2020	103.82793551
2021	206.916575