Year	constant 2015 US$
1982	8239.341579516358
1983	8426.408640253156
1984	8483.03379024545
1985	8658.732890989355
1986	9056.719858921075
1987	9449.858564314203
1988	9937.626382026805
1989	9974.323278587253
1990	10142.54133987961
1991	10504.101013177107
1992	11122.064809283942
1993	11580.300570455762
1994	12033.0432108291
1995	12126.59031525396
1996	12374.160688913304
1997	12324.823589766504
1998	11994.970363986491
1999	12095.948970520009
2000	11802.63001297109
2001	11825.060659800485
2002	12229.617368937232
2003	12296.995096872086
2004	12906.231809658273
2005	13321.997516571146
2006	13949.852871995608
2007	14996.613132304179
2008	15411.350283028938
2009	15197.584964752426
2010	15574.389589712082
2011	16919.162174055775
2012	17841.338023141525
2013	18703.204689203827
2014	19398.934497859595
2015	19387.871979737323
2016	18839.57513466025
2017	18927.92687078892
2018	19334.701989413377
2019	19518.637643641097
2020	16231.787530025616
2021	17486.24981590383
2022	16257.331024371586
2023	17991.751498509537