Year	constant 2015 US$
1991	1428.0595276904753
1992	1350.1204352835598
1993	1555.5778256147375
1994	1407.9719128534484
1995	1677.5993777628853
1996	1637.3126691197235
1997	1549.469728410179
1998	1300.5170025952004
1999	1438.6673781231495
2000	1544.4167853422039
2001	1549.5729471686025
2002	1667.10507398858
2003	1695.0018547401808
2004	1641.8198755223832
2005	1746.716213107713
2006	1810.6362703707655
2007	1885.7082479176718
2008	1937.185084541137
2009	1999.0366428583698
2010	2274.6363277453097
2011	2385.826472059866
2012	2482.801896881801
2013	2720.5373996931803
2014	3002.198253925002
2015	2975.996539278002
2016	2967.5010391107335
2017	2986.0958731134556
2018	3358.762104841834
2019	3340.4881449625896
2020	3190.840954245689
2021	3157.6622176666438
2022	3083.2553541221905