Year	constant 2015 US$
2000	8396.275210644104
2001	8788.84382080173
2002	8636.048387454608
2003	8576.656790933188
2004	8125.1350653672525
2005	7714.005370989297
2006	7249.943448421627
2007	7091.535541683453
2008	8319.13637950618
2009	8689.755790435964
2010	9644.397364322587
2011	10295.989416869983
2012	10303.048483089999
2013	10992.654415394582
2014	10505.954100755009
2015	10372.137756625305
2016	10000.893593790488
2017	9803.59827956346
2018	9732.216788067637
2019	9736.542178445354
2020	9414.84184411467
2021	11304.607579657537