Year	constant 2015 US$
1994	434.6024349306778
1995	410.8195252147127
1996	431.87224916761073
1997	399.1030717330882
1998	385.6217212051383
1999	346.2662043161988
2000	336.66719250945783
2001	309.9711973263681
2002	314.98467168297606
2003	325.34545534139664
2004	335.4339736260305
2005	340.6302627146567
2006	351.0649044923362
2007	358.62229125624316
2008	358.9620291052195
2009	366.5583053333306
2010	379.1245057595166
2011	387.1402490369949
2012	397.4825986867921
2013	399.41838846231695
2014	424.6247521060124
2015	446.58225884955067
2016	470.5584181632708
2017	465.6979878130302
2018	471.42680536768825
2019	467.3300881708411
2020	476.1390939687305
2021	479.3822419948294
2022	490.9084672450642
2023	523.9369057851297