Year	current US$
1981	3334430000
1982	2395630000
1983	4585350000
1984	57926160000
1985	10062640000
1986	10108300000
1987	11888020000
1988	15755770000
1989	25285260000
1990	26129830000
1991	21997200000
1992	17840400000
1993	27371140000
1994	36459340000
1995	44586980000
1996	56877690000
1997	66509410000
1998	46420920000
1999	63699920000
2000	65774110000
2001	69465400000
2002	64169760000
2003	95919910000
2004	141429860000
2005	191078560000
2006	280851340000
2007	354919790000
2008	145906340000
2009	227233230000
2010	295288300000
2011	220936390000
2012	242764880000
2013	265377099999.99997
2014	219369670000
2015	193895750000
2016	231257192555.227
2017	287192200000
2018	267382190000
2019	295548630000