Year current US$ 2000 162.88400438383837 2001 185.8473824982418 2002 221.42705413474826 2003 278.0563509661614 2004 324.74342548553636 2005 383.29687069910614 2006 424.7587002364037 2007 533.2892154682369 2008 683.6095293746893 2009 621.5274456592383 2010 642.7050970631722 2011 673.4186478451024 2012 624.1781229557885 2013 665.9746366115769 2014 683.1385331981339 2015 595.203771689878 2016 620.7289001784774 2017 684.3664013401917 2018 783.8571651297623 2019 812.1271794951774 2020 896.9439343792261 2021 1050.0900353382901