Year	constant 2015 US$
2013	1641978574.0292332
2014	1895157661.5706427
2015	2085118765.08581
2016	2157578537.117484
2017	2206834822.1109734
2018	2425117093.5950427
2019	2608223526.3068194
2020	2659469773.1583834
2021	2952741041.1686807