Year	current US$
1960	28622514396.169495
1961	28922415480.5584
1962	28303446701.12416
1963	29757854215.641773
1964	33119903214.31737
1965	35190038567.90029
1966	38490942918.58607
1967	39429856767.47887
1968	41912887970.27368
1969	44559946291.248566
1970	50052026696.519104
1971	55795238275.83085
1972	64299761548.09118
1973	88601793133.34904
1974	142621013646.8164
1975	168382320973.12454
1976	171535035306.69592
1977	192976207706.5925
1978	220875523676.76498
1979	258742032324.76212
1980	352053100582.13617
1981	388383584585.9785
1982	343657892120.70074
1983	316296397912.431
1984	322634994062.4883
1985	320544629907.9256
1986	323486665572.17834
1987	354931007744.33826
1988	422069049145.59216
1989	456748922997.5395
1990	485850970067.4259
1991	533261373606.3624
1992	607861715517.8282
1993	665831568072.4125
1994	762220482798.4308
1995	925029844362.8187
1996	1010909850232.6193
1997	1092217536321.7297
1998	1030550019174.0754
1999	1029112688489.0048
2000	1231207413568.0713
2001	1233150322808.7998
2002	1321987410409.7039
2003	1589963142309.0234
2004	2070516062024.894
2005	2484566806834.236
2006	2954659376592.392
2007	3611433685937.9326
2008	4471128798450.327
2009	3525773080476.2437
2010	4594453109809.861
2011	5684860546361.239
2012	5923265014567.343
2013	6133448953860.794
2014	6082555000000
2015	5206098000000
2016	4917338000000
2017	5675396000000
2018	6385865000000
2019	6226861000000
2020	5708031000000
2021	7505301000000
2022	8425236000000
2023	8042707000000