Year	constant 2015 US$
1997	50193968.722583175
1998	69612585.10876247
1999	63443493.9572767
2000	71454900.04043974
2001	83685123.15779254
2002	98022651.8023899
2003	137809784.37586367
2004	175199383.81240374
2005	283316210.91019386
2006	364792403.7205545
2007	354934217.89899004
2008	433848091.6561616
2009	352630645.6248267
2010	396392106.9015284
2011	436559629.51890194
2012	489347071.54892087
2013	549686156.0517493
2014	520507888.39935136
2015	509708728.0898592
2016	451305903.07294184
2017	509817871.2265523
2018	606683164.7679566
2019	710425985.9616953
2020	734478949.6163728
2021	758059167.0107892
2022	811277118.8688183
2023	868391028.0678203