Year	current US$
1961	469800000
1978	9650200000
1979	13552200000
1980	18139200000
1981	21473600000
1982	21863100000
1983	22093400000
1984	24821700000
1985	27328400000
1986	31367300000
1987	39462000000
1988	47660000000
1989	52907869083
1990	62755874524
1991	71962490361
1992	85616912557
1993	91690694000
1994	120864000000
1995	148957000000
1996	151163000000
1997	182923000000
1998	183749000000
1999	194936000000
2000	249300000000
2001	266713000000
2002	325751000000
2003	438500000000
2004	593647000000
2005	762218000000
2006	969025000000
2007	1217830000000
2008	1428870000000
2009	1202050000000
2010	1578440000000
2011	1899280000000
2012	2050090000000
2013	2210660000000
2014	2343220000000
2015	2280540000000
2016	2136590000000
2017	2280090000000
2018	2501330000000
2019	2498550000000
2020	2598020000000