Year	constant 2015 US$
2001	519.7290094644193
2002	530.1825193316836
2003	539.4641284148007
2004	537.9615191651718
2005	557.1845898721202
2006	582.1071403884922
2007	596.15531458512
2008	599.9683006675899
2009	630.5793520068568
2010	666.5591902883697
2011	667.7956031148433
2012	686.4461623265696
2013	703.3159652149665
2014	722.5972303511867
2015	737.2805129532907
2016	761.0064934506441
2017	758.2288637486917
2018	795.8809723647528
2019	850.93673513168
2020	866.034046779727
2021	913.6632113248556
2022	959.6981258436797
2023	955.5461626545756