Year	current US$
1960	496000000
1961	580000000
1962	635000000
1963	674000000
1964	839000000
1965	838000000
1966	833000000
1967	774000000
1968	1307000000
1969	1653000000
1970	2079000000
1971	2363000000
1972	2473000000
1973	4240000000
1974	5437000000
1975	5997000000
1976	5669000000
1977	5787000000
1978	7415000000
1979	8576000000
1980	9784000000
1981	10235000000
1982	9655000000
1983	9574000000
1984	9819000000
1985	9875000000
1986	10806000000
1987	14348000000
1988	15018000000
1989	14347000000
1990	16794000000
1991	18658000000
1992	20253000000
1993	22624000000
1994	25237000000
1995	29579000000
1996	31620000000
1997	30782000000
1998	29342000000
1999	33166000000
2000	37686000000
2001	35449000000
2002	35517000000
2003	36303000000
2004	42864000000
2005	44944000000
2006	47318000000
2007	56105000000
2008	64531000000
2009	46928000000
2010	58705000000
2011	72747000000
2012	72270000000
2013	71102000000
2014	71480000000
2015	62065000000
2016	65812000000
2017	69127000000
2018	76598000000
2019	76591000000
2020	69260000000
2021	92155000000
2022	107269000000
2023	91284000000