Year	constant 2015 US$
2007	2948.728009955611
2008	3106.2780370410965
2009	3029.310401504314
2010	3000.0283570768306
2011	3095.6031577651506
2012	3082.1889794796098
2013	3088.358095540578
2014	3031.8930173083104
2015	3062.1214633206773
2016	3160.5794159250777
2017	3272.4247192574794
2018	3387.7864110311666
2019	3595.0775997490105
2020	2812.684381439799
2021	3006.8730510540404
2022	3507.488641538595
2023	3686.330471325846