Year	current US$
1960	1859000000
1961	2017000000
1962	2191000000
1963	2388000000
1964	2621000000
1965	2941000000
1966	3248000000
1967	3468000000
1968	3967000000
1969	4576000000
1970	5063000000
1971	5738000000
1972	6842000000
1973	9528000000
1974	11934000000
1975	12953000000
1976	14835000000
1977	17614000000
1978	23560000000
1979	26538000000
1980	29632000000
1981	27031000000
1982	26018000000
1983	25592000000
1984	25851000000
1985	27433000000
1986	37455000000
1987	45515000000
1988	50704000000
1989	51525000000
1990	63784000000
1991	61517000000
1992	65678000000
1993	63185000000
1994	70360000000
1995	81641000000
1996	79747000000
1997	76150000000
1998	78856000000
1999	80300000000
2000	80500000000
2001	82144000000
2002	91699000000
2003	104822000000
2004	122844000000
2005	149888000000
2006	166455000000
2007	196482000000
2008	236386000000
2009	204305000000
2010	195609000000
2011	234819000000
2012	312257000000
2013	357852000000
2014	311204000000
2015	289720000000
2016	302900000000
2017	299603000000
2018	310749000000
2019	313934000000
2020	319318000000
2021	380194000000
2022	400693000000
2023	420170000000