Year	current US$
1977	471600000
1978	562000000
1979	686200000
1980	839600000
1981	889700000
1982	939900000
1983	1005300000
1984	1190100000
1985	1375500000
1986	1431700000
1987	1514500000
1989	1750510000
1990	1771670000
1991	1716350000
1992	1592260000
1993	1589080000
1994	1739670000
1995	1883080000
1996	2086690000
1997	2713700000
1998	2943000000
1999	3015600000
2000	3359600000
2001	3196400000
2002	3028700000
2003	3127000000
2004	3421700000
2005	4193800000
2006	5006500000
2007	5088400000
2008	5045700000
2009	4225399999.9999995
2010	4414100000
2011	5125700000
2012	4944700000
2013	4840300000
2014	5140100000
2015	4333700000
2016	4407200000
2017	4912800000
2018	5092300000
2019	4813800000
2020	3354900000
2021	4940300000
2022	5746800000
2023	6159600000