Year	constant 2015 US$
1991	2176.862739996776
1992	2212.8593634467925
1993	2328.750971909235
1994	2338.97685628218
1995	2597.404340945705
1996	2628.0861046027226
1997	2686.5572634037944
1998	2665.2443359542644
1999	2524.788990514178
2000	2133.6447850133623
2001	2291.836850394431
2002	2296.843710813101
2003	2629.5857286950973
2004	2433.935450043226
2005	2432.539325965735
2006	2776.161090030341
2007	3221.507890048956
2008	3896.599285592237
2009	3073.866148248597
2010	4774.845256955524
2011	5152.735457939413
2012	3313.225134072357
2013	5121.522869500165
2014	5780.779192312274
2015	5629.134383217726
2016	5752.966269475229
2017	6220.014851688257
2018	6138.552319976246
2019	6234.567643800233
2020	6047.936229171888
2021	5482.467702096644
2022	5662.610342266147