Year	current US$
1988	1670850615.243
1989	953125489.5314124
1990	898407354.7261167
1991	976514749.5853025
1992	1122506186.8213897
1993	1410451772.7950907
1994	2104891780.3502204
1995	2980111067.8893147
1996	4153465856.134891
1997	4249836537.293688
1998	4338553899.527008
1999	4617007595.420469
2000	4891518301.242826
2001	5011010313.010183
2002	5037141515.861168
2003	5293462336.909599
2004	5816644422.657996
2005	6322605826.262471
2006	6627791995.560898
2007	7185023660.131326
2008	7900415108.556058
2009	7950881711.032844
2010	8528006539.06524
2011	9288038870.574703
2012	10004024593.862299
2013	10561132851.113008
2014	11244732043.312506
2015	11767962615.4986
2016	12333276212.021166
2017	12954267840.574516
2018	12753890478.108698
2019	12503846933.683966
2020	11877016881.140444
2021	13482503839.653372
2022	14505146846.498255
2023	16015859763.784176