Year	constant 2015 US$
1991	705.3640555940054
1992	714.0019403067267
1993	724.0455274698761
1994	710.6932428196477
1995	687.3257231881657
1996	716.2281102022548
1997	738.0931942782066
1998	754.9720543119334
1999	743.5130563969225
2000	822.0341794989306
2001	843.5036512555066
2002	852.8790383527584
2003	842.192754594413
2004	801.0182920859204
2005	828.9266328552094
2006	864.861381420652
2007	848.3237442269481
2008	852.5129555527806
2009	881.6110151135393
2010	895.4951119752493
2011	902.205541758921
2012	915.2524294331497
2013	911.1108808313334
2014	891.5179831764281
2015	886.2310113183829
2016	910.6667823727856
2017	929.3691398708343
2018	923.7591449418486
2019	860.7469221133513
2020	867.2198121971778
2021	858.3334729032396
2022	839.6708857131304