Year	constant 2015 US$
1989	1898162679.977557
1990	2014110878.9411454
1991	2183473325.7806067
1992	2578218208.4311404
1993	3138417245.878361
1994	2823142459.568119
1995	3062855512.6032515
1996	5703607601.0997
1997	3535767727.5798182
1998	3078488964.8639765
1999	2466178443.555141
2000	1746515778.28668
2001	1904376856.5131037
2002	2727317323.310511
2003	2155072956.63393
2004	2218411165.4601536
2005	2235383106.005931
2006	2272974910.995666
2007	2872387834.1894035
2008	3253453446.1118026
2009	3238601666.4641137
2010	3123640607.937432
2011	4290036486.8640523
2012	5529961650.840519
2013	6190816413.567306
2014	4251642057.651173
2015	4529020423.867435
2016	4022745362.1121664
2017	4348262715.8912115
2018	5579221940.167305
2019	5333743785.277003
2020	4835385165.111729
2021	4164571569.432684
2022	4087966019.8397655
2023	4096308453.827814