Year	constant 2015 US$
2009	36729.70966396289
2010	38107.62758863353
2011	40600.924308791924
2012	39733.49983246535
2013	38089.81527239709
2014	37584.98044901207
2015	36519.992661527336
2016	36715.491682987056
2017	34280.34547553212
2018	31668.136324555566
2019	34507.720107626745
2020	29391.990888420296
2021	30467.12223320411
2022	33305.63186307423
2023	34207.95128120812