Year	current US$
1980	549000000
1981	683000000
1982	630000000
1983	598000000
1984	581000000
1985	654000000
1986	631000000
1987	661000000
1988	656000000
1989	785000000
1990	600000000
1991	485800000
1992	1165200000
1993	1229300000
1994	1246100000
1995	1277900000
1996	1245900000
1997	1199200000
1998	2550568658.58022
1999	1472542279.74351
2000	1660294030.8525
2001	1866018474.270572
2002	1725050659.5315607
2003	2405765153.55909
2004	3193429986.888927
2005	3381534708.130559
2006	4096804613.1167526
2007	5193028737.871838
2008	5945377550.608712
2009	5028128798.659971
2010	3409810000
2011	3567530000
2012	4142530000
2013	4295760000
2014	5625100000
2015	4881700000
2016	5289910000
2017	5898710000
2018	5984670000
2019	5990640000
2020	4778190000
2021	6018490000
2022	6874960000
2023	8016720000