Year	constant 2015 US$
2000	853.5537820483629
2001	951.3663478540338
2002	918.652894170105
2003	840.4880217454877
2004	840.7647446217662
2005	807.8655707702259
2006	694.793597998721
2007	717.6158224458044
2008	661.7354823617839
2009	732.773054038328
2010	744.5268014471477
2011	737.116523626745
2012	732.7275076559583
2013	766.592541894271
2014	793.5587383844096
2015	770.1149349028415
2016	792.5043403273987
2017	803.730268211561
2018	805.1400924836253
2019	823.2773472827269
2020	800.1574621440855
2021	766.1708084079394
2022	860.2267508439601