Year	current US$
1988	985742836447.4758
1989	957406797905.5964
1990	1016696527904.2733
1991	998575587092.4484
1992	925302955135.0815
1993	922190800146.8064
1994	834356408944.4597
1995	923817586373.6389
1996	950432338921.8971
1997	980301520759.2384
1998	947639106110.6318
1999	821600621769.2251
2000	894544257579.7665
2001	909540184630.0417
2002	1022700571400.7289
2003	1258197590827.0083
2004	1628013567626.7354
2005	2039292026212.709
2006	2466363795862.1216
2007	3172404499923.2744
2008	3926836234821.6123
2009	3113738044750.0786
2010	3657869416963.521
2011	4450219264234.292
2012	4646863189589.231
2013	4915748484819.6455
2014	4644397266377.622
2015	3627947465522.133
2016	3486198200219.9795
2017	3909728235465.927
2018	4077637180273.379
2019	4159709661061.9346
2020	3900798423599.7705
2021	4623633114358.754
2022	5220065561112.426
2023	5466276097557.086