Year	constant 2015 US$
2002	496157205.2401748
2003	508209606.9868997
2004	530305676.8558953
2005	523275109.1703057
2006	514235807.86026204
2007	505196506.55021834
2008	491135371.1790393
2009	476069868.9956332
2010	455982532.75109166
2011	432882096.069869
2012	421834061.13537115
2013	441921397.3799127
2014	452969432.31441045
2015	460000000
2016	465021834.06113535
2017	462008733.62445414
2018	467030567.68558955
2019	483100436.68122274
2020	506200873.3624455
2021	543362445.4148473
2022	500174672.48908305