Year	constant 2010 US$
1960	479714991.749831
1961	524218445.849639
1962	654804402.572161
1963	722665608.908009
1964	965091332.757516
1965	1120909660.67563
1966	1262105960.70923
1967	1261768529.29651
1968	1101151176.84193
1969	1266717523.34973
1970	1281452028.37182
1971	1323668447.34097
1972	886619783.110587
1973	1812231640.5799
1974	2549069368.82214
1975	1508880800.54489
1976	1544648530.29318
1977	2642687839.66225
1978	1084804499.51462
1979	-473678718.700067
1980	1308409049.01021
1981	2000743323.15264
1982	1648877344.44438
1983	1792848080.53811
1984	1808594879.79836
1985	1797797074.59133
1986	1775601586.11022
1987	1748269641.67992
1988	1234286615.34945
1989	1068522725.28944
1990	933430495.517876
1991	1046654714.8491
1992	1097260179.77594
1993	895728258.329585
1994	1132691265.52303
1995	1298106065.28679
1996	1567522052.50899
1997	1900828980.96892
1998	1964741885.58069
1999	2566731426.15339
2000	2134246431.60032
2001	1955144022.87977
2002	1816419307.60825
2003	1797652447.71729
2004	1989725085.20787
2005	2214946534.56468
2006	2211802754.91301
2007	2611856442.95281
2008	2872263428.32548
2009	1965042547.96555
2010	2175630237.30591
2011	2810102975.66283
2012	2968777707.3762
2013	3071877375.40639
2014	3058390038.95534
2015	3904059713.62561
2016	3893757405.0485
2017	3695071489.52547
2018	2823383543.02586