Year	constant 2015 US$
1991	2970.5898349334984
1992	2911.1811844853996
1993	2983.953698215603
1994	2719.1370805346846
1995	2593.4664143316922
1996	2628.4841530967697
1997	2656.9727164047767
1998	2722.976781359838
1999	2718.6142763508615
2000	2976.305205669119
2001	2937.8564514872814
2002	3201.1883781495744
2003	3174.883505098862
2004	3603.4259482541433
2005	3932.210432841411
2006	4169.459012959363
2007	4148.387314368313
2008	4367.56742593767
2009	4644.1815541514525
2010	4725.392900688948
2011	4965.933045501011
2012	5015.174270325614
2013	5320.666906444749
2014	5602.927436853721
2015	6001.139276941058
2016	6122.677595286139
2017	6288.909135938834
2018	6559.028024888891
2019	6808.797194332561
2020	7217.413483098836
2021	7140.341274054781
2022	7610.850617834912