Year	constant 2015 US$
2000	17505.28919054453
2001	16583.026346785748
2002	16282.097594401623
2003	15274.358012905761
2004	14837.46608833175
2005	14613.153911958934
2006	14720.175049952826
2007	14075.512313718846
2008	14158.036836042333
2009	14070.430751746662
2010	14394.23025392583
2011	15020.887752532542
2012	14418.705131873348
2013	14433.453050587981
2014	13921.204847986883
2015	14547.540729034661
2016	14525.760517596804
2017	14809.762349956874
2018	15272.786427572692
2019	15553.618818713918
2020	14202.78222641574
2021	16271.722760323453
2022	17057.17167791198