Year	current US$
1960	63000000
1961	73000000
1962	81000000
1963	83000000
1964	95000000
1965	127000000
1966	143000000
1967	155000000
1968	181000000
1969	168000000
1970	179000000
1971	189000000
1972	205000000
1973	259000000
1974	289000000
1975	295000000
1976	400000000
1977	513000000
1978	608000000
1979	734000000
1980	830000000
1981	761000000
1982	660000000
1983	672000000
1984	725000000
1985	780000000
1986	854000000
1987	791000000
1988	842000000
1989	859000000
1990	934000000
1991	949000000
1992	1031000000
1993	1173000000
1994	1378000000
1995	1769000000
1996	2007000000
1997	2440000000
1998	2929000000
1999	2777000000
2000	3343000000
2001	3423000000
2002	3745000000
2003	3754000000
2004	4534000000
2005	5048000000
2006	5277000000
2007	5784000000
2008	6199000000
2009	4827000000
2010	6264000000
2011	7977000000
2012	8359000000
2013	7833000000
2014	8117000000
2015	8226000000
2016	7960000000
2017	8656000000
2018	8644000000
2019	8788000000
2020	7683000000
2021	10247000000
2022	12281000000
2023	11376000000