Year	constant 2015 US$
1991	3598.7907415146183
1992	3199.4471567581936
1993	2444.502825848158
1994	2338.5700301349616
1995	2441.8387103557143
1996	2821.724167739529
1997	2840.053644538317
1998	2439.916748303471
1999	2871.2572804723472
2000	3157.356628872539
2001	3259.3883545532603
2002	3127.272152172236
2003	3137.943168953057
2004	3163.4355676771343
2005	2878.0289698170336
2006	2691.150487106832
2007	3351.655280767887
2008	3370.1300387237907
2009	3251.055841770812
2010	3130.0922448617953
2011	3064.886987536055
2012	3146.6184493737796
2013	3383.843576889928
2014	3372.459481821715
2015	3464.0585724458924
2016	3692.820978587887
2017	3668.7258667142196
2018	3813.0431146465867
2019	3444.694936265893
2020	2792.3134533454486
2021	2405.7975120234973
2022	2240.0519669416294