Year	current US$
2000	42.32798673
2001	44.40778154
2002	49.50286262
2003	60.17888823
2004	68.59995812
2005	70.61670439
2006	75.31516085
2007	85.59399991
2008	97.36590552
2009	97.15614797
2010	100.17064485
2011	111.06028959
2012	109.12736341
2013	109.63003349
2014	107.82603132
2015	97.63524797
2016	94.28978334
2017	89.47096421
2018	89.02538824
2019	74.54208305
2020	82.4453563
2021	89.56988116