Year	current US$
1980	6829805655.3811245
1981	6317658490.342458
1982	5743321713.940088
1983	5203605274.484486
1984	5401226335.259556
1985	5595398714.536431
1986	7111587399.629401
1987	8201487918.743298
1988	8863194281.237759
1989	9168216041.818548
1990	10057879806.717577
1991	8859573212.071104
1992	8726857206.634842
1993	6157848755.042783
1994	6642820114.04873
1995	7722793097.164005
1996	7450939457.202505
1997	6623400437.4648
1998	6259324016.654297
1999	5838255228.505035
2000	5106524633.821571
2001	4714447531.7307415
2002	5069271138.2239065
2003	6214090498.744791
2004	7039012641.347684
2005	4917504114.758266
2006	5763465343.850804
2007	7754039178.552406
2008	8114882189.619335
2009	6271655909.482871
2010	8177981597.703045
2011	9590141591.93004
2012	8547729101.248107
2013	8606270163.389816
2014	8399476153.239024
2015	7321774200.639434
2016	7212690972.4080925
2017	7809812476.964526
2018	7736308100.970358
2019	7432269496.641377
2020	7272285847.664335
2021	8240127120.745183
2022	8660749826.763014
2023	9507866768.506895