Year	constant 2015 US$
2006	5515.006189929628
2007	5861.560365951193
2008	6291.884442972102
2009	5842.152583427999
2010	5938.47659755442
2011	6215.608550609974
2012	6091.998450072641
2013	6321.140315447389
2014	6388.527224181724
2015	6659.942533500344
2016	6767.3416746779685
2017	7174.476391810078
2018	7473.437894606868
2019	7774.747546331326
2020	6625.116156788043
2021	7551.640746310587
2022	8050.35291239301
2023	8460.368921804047