Year	constant 2015 US$
1990	3755.150285178344
1991	3146.653684437398
1992	2229.169813053958
1993	2203.015021976949
1994	1525.9931774066954
1995	1511.9583176505394
1996	1425.9518091470998
1997	1454.8086155592323
1998	1360.1816109554388
1999	1316.4325491600669
2000	1346.9156717656128
2001	1432.276892823399
2002	1547.5742123161233
2003	1654.366293031951
2004	1781.1914532372407
2005	1919.4455076374759
2006	2017.177300629081
2007	2082.512600976692
2008	2249.225897193717
2009	2116.9435754409674
2010	2269.5111614599646
2011	2402.9444630605094
2012	2389.0866614752895
2013	2605.850299861424
2014	2737.801850566472
2015	2749.5513705433796
2016	2910.954868723758
2017	3085.333058442626
2018	3267.9961042871973
2019	3438.677326707123
2020	3188.916916026994
2021	3688.1672944214374
2022	3581.7197254770936
2023	3685.2567050118078