Year	current US$
2000	0.64149702
2001	6.8297462
2002	6.99536985
2003	8.36147705
2004	33.00830523
2005	26.69057131
2006	52.2820739
2007	23.70790737
2008	78.61409989
2009	5.00621416
2010	43.46163289
2011	19.42894623
2012	75.41354052
2013	27.37194378
2014	64.62045824
2015	45.85152597
2016	54.90433968
2017	65.58272514
2018	51.63773579
2019	68.18392151
2020	84.7940813
2021	96.20758836