Year	current US$
2000	785.81113849
2001	771.54782975
2002	937.3811267
2003	1216.88026047
2004	1527.79881965
2005	1767.1835928
2006	1780.00081016
2007	2146.40365157
2008	2213.32668898
2009	2109.16502427
2010	2531.11070942
2011	2880.81446641
2012	3027.45081066
2013	3117.15995385
2014	3246.63296601
2015	2689.69065748
2016	2787.85695206
2017	2945.54763965
2018	2961.71047622
2019	3069.00571833
2020	3288.63837978
2021	3779.58013463