Year	current US$
1960	78000000
1961	76000000
1962	80000000
1963	90000000
1964	105000000
1965	116000000
1966	111000000
1967	101000000
1968	106000000
1969	119000000
1970	122000000
1971	126000000
1972	167000000
1973	239000000
1974	269000000
1975	240000000
1976	280000000
1977	333000000
1978	306000000
1979	418000000
1980	425000000
1981	380000000
1982	399000000
1983	403000000
1984	417000000
1985	333000000
1986	455000000
1987	355000000
1988	429000000
1989	465000000
1990	298000000
1991	189000000
1992	169000000
1993	199000000
1994	372000000
1995	422000000
1996	417000000
1997	587000000
1998	561000000
1999	467000000
2000	486000000
2001	455000000
2002	480000000
2003	496000000
2004	678000000
2005	903000000
2006	1043000000
2007	1277000000
2008	1602000000
2009	1618000000
2010	2330000000
2011	2875000000
2012	3370000000
2013	2973000000
2014	3275000000
2015	2914000000
2016	2789000000
2017	3022000000
2018	2704000000
2019	2741000000
2020	3258000000
2021	3949000000
2022	3970000000
2023	3616000000