Year	constant 2010 US$
2010	521284019.539428
2011	578506629.448709
2012	571179344.033496
2013	575715282.623866
2014	618918353.105373
2015	585900209.351012
2016	588974180.04187
2017	609211444.521982
2018	657711095.603629