Year	current US$
1960	10340900000
1961	10797100000
1962	11086200000
1963	11935300000
1964	12512100000
1965	13415400000
1966	14618600000
1967	14348200000
1968	15344200000
1969	17514100000
1970	19343100000
1971	22626000000
1972	24742600000
1973	31020000000
1974	39387200000
1975	44536000000
1976	45480800000
1977	55856600000
1978	67844500000
1979	86342700000
1980	110061000000
1981	102263000000
1982	96955100000
1983	91631300000
1984	93876700000
1985	101240000000
1986	107051000000
1987	131212000000
1988	146118000000
1989	154435000000
1990	185030000000
1991	184944000000
1992	189982000000
1993	180129000000
1994	203887000000
1995	239348000000
1996	258238000000
1997	279550000000
1998	268181000000
1999	269495000000
2000	284561000000
2001	272681000000
2002	279457000000
2003	305375000000
2004	347428000000
2005	389972000000
2006	450173000000
2007	442065000000
2008	472919000000
2009	355667000000
2010	415601000000
2011	505648000000
2012	472938000000
2013	539990000000
2014	504518000000
2015	459586000000
2016	408910000000
2017	440984000000
2018	486595000000
2019	469923000000
2020	395389000000