Year	current US$
1970	1069355000000
1971	1164230000000
1972	1282482000000
1973	1421266000000
1974	1546058000000
1975	1668928000000
1976	1875043000000
1977	2104920000000
1978	2376966000000
1979	2649878000000
1980	2870363000000
1981	3219561000000
1982	3363763000000
1983	3685680000000
1984	4140340000000
1985	4452997000000
1986	4711500000000
1987	4999985000000
1988	5345831000000
1989	5728320000000
1990	6040998000000
1991	6186743000000
1992	6555066000000
1993	6923733000000
1994	7379724000000
1995	7729510000000
1996	8169498000000
1997	8679523000000
1998	9225528000000
1999	9890722000000
2000	10632025000000
2001	10958677000000
2002	11368853000000
2003	11978405000000
2004	12851337000000
2005	13779099000000
2006	14602036000000
2007	15210161000000
2008	15510731000000
2009	14897220000000
2010	15581280000000
2011	16179349000000
2012	16805588000000
2013	17359137000000
2014	18117038000000
2015	18819339000000
2016	19308185000000
2017	20155431000000
2018	21249592000000
2019	22099898000000
2020	21949341000000
2021	24452269000000
2022	26715226000000