Year current US$ 2000 1251.1891453584435 2001 1297.1163185421904 2002 1402.4453723239158 2003 1608.8233145409786 2004 1794.2616706525953 2005 1899.6036110877415 2006 2008.7920670136923 2007 2201.4351485330526 2008 2408.9264859185473 2009 2454.810174252021 2010 2543.505832843293 2011 2774.009851602642 2012 2767.1129514744293 2013 2778.805538663813 2014 2873.392175615324 2015 2731.7070764302885 2016 2817.0712539333513 2017 2915.964007812652 2018 3073.585129776094 2019 3140.6719470113035 2020 3609.5549777394303 2021 3827.3782805174224