Year	constant 2015 US$
1991	9586.779662179884
1992	9510.093028128633
1993	9516.530217813244
1994	9544.694032546402
1995	9449.374943062714
1996	9943.284528430768
1997	9730.139991106946
1998	9486.87789751527
1999	9475.076961085399
2000	9535.88783021504
2001	9140.31922879911
2002	9448.940540898999
2003	8998.217613647364
2004	9062.308598771993
2005	8939.556417758839
2006	9677.178698608623
2007	9738.525246776147
2008	9448.013403842177
2009	9857.237954364182
2010	10321.091466688495
2011	10267.00357657785
2012	9948.902115249768
2013	10149.619493969216
2014	10694.071175786883
2015	10792.426039177979
2016	10552.510454776275
2017	10868.857480661703
2018	10625.332731845014
2019	10363.516071005972
2020	10909.963380465919
2021	10914.647131574964
2022	10540.80287687414