Year	current US$
1960	112000000
1961	103000000
1962	122000000
1963	128000000
1964	136000000
1965	138000000
1966	146000000
1967	145000000
1968	170000000
1969	182000000
1970	170000000
1971	214000000
1972	205000000
1973	203000000
1974	281000000
1975	366000000
1976	285000000
1977	347000000
1978	443000000
1979	641000000
1980	600000000
1981	545000000
1982	417000000
1983	387000000
1984	366000000
1985	402000000
1986	353000000
1987	302000000
1988	360000000
1989	342000000
1990	651000000
1991	446000000
1992	471000000
1993	514000000
1994	546000000
1995	628000000
1996	629000000
1997	694000000
1998	693000000
1999	742000000
2000	1097000000
2001	1118000000
2002	627000000
2003	1304000000
2004	1680000000
2005	1706000000
2006	1804000000
2007	2635000000
2008	3781000000
2009	3199000000
2010	2584000000
2011	2905000000
2012	3094000000
2013	3260000000
2014	3227000000
2015	2795000000
2016	2966000000
2017	3670000000
2018	4061000000
2019	3942000000
2020	3221000000
2021	4408000000
2022	5613000000
2023	4750000000