Year	current US$
1976	1144000000
1977	1309000000
1978	1521000000
1979	1863000000
1980	2023000000
1981	1727000000
1982	1467000000
1983	1783000000
1984	1853000000
1985	1846000000
1986	2012000000
1987	2028000000
1988	2404000000
1989	3053000000
1990	2847000000
1991	2994000000
1992	4045000000
1993	3631000000
1994	3746000000
1995	7008000000
1996	6228000000
1997	5610000000
1998	6479000000
1999	6837000000
2000	8863000000
2001	8854000000
2002	9165000000
2003	10810000000
2004	12593000000
2005	14739000000
2006	18672000000
2007	22819000000
2008	28865000000
2009	23012000000
2010	29574000000
2011	32059000000
2012	31793000000
2013	32918000000
2014	34920000000
2015	31896000000
2016	33381000000
2017	37541000000
2018	42873000000
2019	43358000000
2020	40285000000
2021	49316000000
2022	56894000000
2023	65004000000