Year	constant 2015 US$
2006	647.586436846537
2007	675.9376741413492
2008	685.1208706356321
2009	654.0588779196498
2010	676.7963359058452
2011	691.4507003049497
2012	716.8414529951441
2013	701.8674201233956
2014	722.7293968963096
2015	744.1046413987829
2016	802.6987965616097
2017	874.333805565508
2018	878.5960044255581
2019	898.1094139204237
2020	871.7351372698151
2021	832.4510520297101
2022	885.0454000577976
2023	906.2742482548035