Year	current US$
1960	1120000000
1961	1202000000
1962	1264000000
1963	1326000000
1964	1446000000
1965	1600000000
1966	1684000000
1967	1809000000
1968	1989000000
1969	2412000000
1970	2857000000
1971	3168000000
1972	3883000000
1973	5283000000
1974	7161000000
1975	7519000000
1976	8506000000
1977	9808000000
1978	12175000000
1979	15481000000
1980	17489000000
1981	15841000000
1982	15642000000
1983	15427000000
1984	15739000000
1985	17239000000
1986	22508000000
1987	27168000000
1988	31027000000
1989	31906000000
1990	41265000000
1991	41111000000
1992	44537000000
1993	40685000000
1994	45002000000
1995	57738000000
1996	58222000000
1997	59784000000
1998	64085000000
1999	66061000000
2000	67710000000
2001	70751000000
2002	78673000000
2003	97146000000
2004	118376000000
2005	125182000000
2006	136751000000
2007	163620000000
2008	181289000000
2009	136989000000
2010	152560000000
2011	177428000000
2012	166611000000
2013	175156000000
2014	178223000000
2015	152728000000
2016	152090000000
2017	168026000000
2018	184815000000
2019	178670000000
2020	169418000000
2021	202806000000
2022	211929000000
2023	223549000000