Year	current US$
2000	42.57900311246337
2001	44.2043889209892
2002	43.21300907808252
2003	41.241524383194545
2004	47.22208974121831
2005	53.89094612186281
2006	57.90240260090089
2007	69.77625421339071
2008	84.74579517518566
2009	95.40126957718027
2010	111.37150921395522
2011	122.66554710673978
2012	128.83548684192712
2013	117.80731237155884
2014	107.65777689579544
2015	111.71789204347527
2016	112.66602119543477
2017	109.50081495343633
2018	111.10250432168371
2019	108.96241467178059
2020	103.27105969054358
2021	108.53581978260976