Year	current US$
1960	1200000
1963	3800000
1964	151100000
1965	146400000
1966	139700000
1967	170200000
1968	160300000
1969	167700000
1970	134800000
1971	141000000
1972	203680000
1973	223030000
1974	318780000
1975	358570000
1976	337130000
1977	320760000
1978	392050000
1979	436750000
1980	636670000
1981	720590000
1982	646340000
1983	578230000
1984	698720000
1985	708970000
1986	913430000
1987	1084670000
1988	1217030000
1989	1438460000
1990	1823880000
1991	1732800000
1992	1630520000
1993	1493480000
1994	1429060000
1995	1398750000
1996	1218850000
1997	1250820000
1998	892720000
1999	879890000
2000	825350000
2001	633020000
2002	1095310000
2003	2235230000
2004	2254360000
2005	991330000
2006	1226490000
2007	1392900000
2008	1292000000
2009	1096010000
2010	1458170000
2011	2153000000
2012	1264320000
2013	1695980000
2014	1248270000
2015	1085480000
2016	882070000
2017	1127170000
2018	1239290000
2019	1479310000
2020	2073389999.9999998
2021	1960920000
2022	1960490000