Year	current US$
1989	2253.3467595021816
1990	2416.1613166802904
1991	2553.53295035856
1992	2721.9070621548526
1993	3222.507245726465
1994	3741.508391260303
1995	3921.0066761415724
1996	4209.756213852314
1997	4520.318960581486
1998	4487.531188354651
1999	3924.4910717685943
2000	4275.555715564943
2001	4109.867092528837
2002	3650.2920314404287
2003	3678.462948390293
2004	4137.701045632756
2005	4940.247215787964
2006	5692.795139565977
2007	6643.877037466984
2008	7593.117527059419
2009	6959.748031285833
2010	8613.65512681046
2011	9944.482586569144
2012	9791.838689017284
2013	9939.83042029737
2014	9872.41105467888
2015	8297.302257774545
2016	7968.022179200976
2017	8788.654343177488
2018	8446.455053318992
2019	8245.295660555286
2020	6882.220607840847
2021	7916.812920301373
2022	9033.755379589033
2023	10070.443375592276