Year	constant 2015 US$
2013	1689.7077488098655
2014	1916.0677084732108
2015	2072.1491833472396
2016	2108.531974850487
2017	2121.481266323
2018	2293.910027823589
2019	2428.5270926158055
2020	2439.5313818924847
2021	2670.817552752758