Year	constant 2015 US$
2011	739.403706179385
2012	778.0298424665655
2013	807.9649640910853
2014	840.3677446828067
2015	856.4327027313906
2016	880.1791734713531
2017	908.0007803666189
2018	958.077190819764
2019	1025.8301474028165
2020	1014.2944599109877
2021	1033.2769245517607