Year	current US$
1960	4316999999.999999
1961	4234999999.999999
1962	3644999999.999999
1963	4223999999.9999986
1964	4703999999.999998
1965	4935999999.999998
1966	5447999999.999998
1967	5292999999.999998
1968	5821999999.999997
1969	6347999999.999997
1970	7032999999.999996
1971	7931999999.999996
1972	9666999999.999994
1973	13491999999.999992
1974	24364999999.999985
1975	36418999999.99998
1976	37571999999.99998
1977	45474999999.99998
1978	50081999999.99998
1979	50666999999.999985
1980	68419999999.99998
1981	85904999999.99997
1982	80636999999.99997
1983	76965999999.99997
1984	72434999999.99997
1985	64260999999.99998
1986	61284999999.99998
1987	60351999999.99998
1988	74030999999.99997
1989	75724999999.99997
1990	72915999999.99997
1991	72661999999.99997
1992	75714999999.99997
1993	72986999999.99997
1994	71075999999.99997
1995	77145999999.99997
1996	84614999999.99997
1997	81862999999.99997
1998	87133999999.99997
1999	88072999999.99995
2000	91862999999.99997
2001	97773999999.99997
2002	100200999999.99998
2003	111633999999.99997
2004	154808999999.99997
2005	183072999999.99997
2006	194540999999.99997
2007	238601999999.99997
2008	317389999999.99994
2009	294169999999.99994
2010	339199999999.99994
2011	362146999999.99994
2012	394322999999.99994
2013	395750000000
2014	407271000000
2015	346639000000
2016	308627000000
2017	334617000000
2018	366813000000
2019	378215000000
2020	305750000000
2021	361123000000
2022	471278000000.00006
2023	453929000000.00006