Year	constant 2015 US$
2011	376.73513162631906
2012	378.74584077014475
2013	404.72678364710674
2014	419.63147284981335
2015	449.06266686753366
2016	453.7102083758215
2017	479.7238731770063
2018	479.76149698357233
2019	530.9431953206889
2020	559.9734763014229
2021	593.1625339119787
2022	611.0360118957038
2023	638.6378525150187