Year	current US$
1991	2304.2345747571026
1992	2184.3730969510752
1993	2121.599125345773
1994	1941.3807531262175
1995	2036.9252352014835
1996	2113.9661344293663
1997	2221.438430578298
1998	2093.795775497393
1999	1978.82826092422
2000	2072.3326108510155
2001	2003.3302668251622
2002	2166.338393786579
2003	2534.2965501974677
2004	3246.3125236017986
2005	4109.350186649481
2006	5023.392294964085
2007	6195.462195524861
2008	7545.3876593996765
2009	7510.253451349803
2010	7970.4313968944525
2011	8568.131846979019
2012	9679.406646446974
2013	10545.577814231
2014	10476.552042130437
2015	9269.770801194456
2016	8193.46040641177
2017	7931.221287527029
2018	8456.101238489571
2019	8912.496782533963
2020	8618.299045865751
2021	9472.848828546052
2022	10382.498234840132
2023	11375.556362237328