Year	constant 2015 US$
1991	2115.110194505138
1992	1831.550112107543
1993	2062.02594481938
1994	2117.6022463843397
1995	2144.1731527349125
1996	2252.0286124387717
1997	2020.8548454402414
1998	1764.52692499338
1999	1729.9404328103478
2000	1412.259723935828
2001	1883.858564815422
2002	2351.2095775164717
2003	2526.341572679587
2004	3516.109948294108
2005	3016.8261296871597
2006	3244.6044720725695
2007	2490.992987272009
2008	3212.385979408342
2009	3169.2213299837927
2010	2549.3771922194423
2011	3208.2783412612566
2012	2376.221313413596
2013	3241.5999627242427
2014	3598.803063129148
2015	3625.1521273401895
2016	4162.132116976032
2017	4635.527464102981
2018	5375.876801914193
2019	5465.8397852303915
2020	4888.634711355575
2021	6743.500093983221
2022	5239.119942983251