Year	current US$
1981	2310099100
1982	2552401933.3333335
1983	2725736633.3333335
1984	2098734599.9999998
1985	2186505475
1986	2896178866.6666665
1987	3020611600
1988	3204461566.6666665
1989	3576966800
1990	2560785660
1991	2379018326.3157897
1992	1317611863.8497653
1993	768401634.1545731
1994	925817092.217484
1995	1452165005.238403
1996	1345719472.358831
1997	1180934202.8380105
1998	1124440204.8473787
1999	1057408588.6826869
2000	1136896123.6129804
2001	1267997934.312504
2002	1396555719.9740865
2003	1595297355.7834878
2004	1992066808.0959773
2005	2523471601.104208
2006	3414055661.6159754
2007	4234999703.900587
2008	5623216608.042884
2009	4583850367.88972
2010	7189481998.900941
2011	10409797377.857065
2012	12292770631.564991
2013	12582122604.257748
2014	12226514668.062176
2015	11619892590.694118
2016	11181350649.357347
2017	11480847740.73598
2018	13178094720.498564
2019	14206359017.514322
2020	13312981429.08905
2021	15286441737.668615
2022	17146471713.748024
2023	19872180369.6275