Year	current US$
1989	4422.55532605315
1990	2761.4600196051038
1991	2448.1060224327193
1992	2707.2057940011046
1993	2976.300781282879
1994	3342.810316904656
1995	3623.005553117868
1996	4013.1290847312516
1997	4343.945692142056
1998	4349.778203783113
1999	4145.49237046157
2000	4213.605552436521
2001	4098.622607951886
2002	3854.0962091276824
2003	3849.4606660893833
2004	4167.669207941335
2005	4659.020005536774
2006	5353.882196021574
2007	6236.412094996609
2008	7178.159010864547
2009	7337.977620063446
2010	8134.927980997876
2011	8956.305895798665
2012	9887.607652411065
2013	10306.999845417762
2014	10197.036071614913
2015	9225.75197101337
2016	8484.464713459189
2017	8370.047785543195
2018	8706.106144733176
2019	8808.281177469176
2020	7708.831299235604
2021	8200.436055375434
2022	8827.083111736723
2023	9566.216950438771