Year	current US$
1986	2099123532.0878317
1987	1691529035.4582207
1988	1015688180.6618727
1989	869437234.7982963
1990	827476094.9097815
1991	939634977.2907945
1992	1105174205.5227993
1993	1272959250.591831
1994	1470030920.5689647
1995	1711952876.9049275
1996	1894716672.4875953
1997	1884791716.071404
1998	1580437764.2047873
1999	1508300691.0843782
2000	1496698154.1965547
2001	1662596036.880653
2002	1766065735.9805005
2003	1880785627.25111
2004	2196274838.4253745
2005	2624977448.436985
2006	3006325748.0672154
2007	3662104929.200623
2008	4555059891.701095
2009	5498229352.599233
2010	6246249910.519397
2011	7266648014.620049
2012	8826566009.210054
2013	10544288515.286074
2014	12121969753.594963
2015	13339842542.946949
2016	14563895801.747578
2017	15708810505.32441
2018	17553673169.131626
2019	18208815280.629635
2020	18110172891.736153
2021	18650869134.6331
2022	17366641629.524628
2023	16195396090.516748