Year	current US$
1960	1064000000
1961	1154000000
1962	1228000000
1963	1208000000
1964	1505000000
1965	1646000000
1966	1726000000
1967	1676000000
1968	1592000000
1969	2025000000
1970	2638000000
1971	2807000000
1972	3165000000
1973	4341000000
1974	6813000000
1975	7628000000
1976	7392000000
1977	7608000000
1978	7866000000
1979	11398000000
1980	15635000000
1981	14192000000
1982	13401000000
1983	12826000000
1984	12433000000
1985	13232000000
1986	15339000000
1987	19634000000
1988	21130000000
1989	24436000000
1990	27001000000
1991	21809000000
1992	21208000000
1993	18034000000
1994	23275000000
1995	29470000000
1996	31422000000
1997	31611000000
1998	32960000000
1999	32114000000
2000	34443000000
2001	32639000000
2002	34218000000
2003	42513000000
2004	51443000000
2005	58766000000
2006	69375000000
2007	81704000000
2008	91781000000
2009	60889000000
2010	68803000000
2011	84264000000
2012	76468000000
2013	77570000000
2014	76765000000
2015	60430000000
2016	60841000000
2017	70586000000
2018	78624000000
2019	73716000000
2020	68268000000
2021	86013000000
2022	97329000000
2023	82345000000