Year	constant 2015 US$
1997	305880043.42034024
1998	249278078.35186484
1999	299008662.32297903
2000	312124796.5925144
2001	327990732.6164376
2002	321133027.4506223
2003	302892342.209083
2004	330209793.73988134
2005	327907437.877393
2006	343788162.1238354
2007	356031795.60256773
2008	378619492.86809605
2009	375415625.1914014
2010	402848537.2412303
2011	449339992.510796
2012	436555707.31550044
2013	451680125.56968385
2014	476824985.54209083
2015	519839172.7357195
2016	556125667.188676
2017	586452212.7679145
2018	598581379.0516996
2019	627259239.3799351
2020	636041203.6366708
2021	682471272.7521164
2022	707722802.8732271
2023	720332499.2395531