Year	current US$
1980	550763597.060538
1981	703330268.857636
1982	1282726212.6941
1983	1564433192.50874
1984	2853829697.34521
1985	2850951097.19983
1986	3047388769.57082
1987	5235494711.60617
1988	5419423527.45961
1989	4261771000.14244
1990	3221317935.07162
1991	2322862733.95408
1992	1830883158.13462
1993	2302922430.01877
1994	2942374015.31954
1995	4230955406.55844
1996	4486177466.1976
1997	4793541519.09627
1998	5062689943.13171
1999	4860323152.7852
2000	4949685965.70801
2001	4571075289.85906
2002	4784762748.21738
2003	4678527827.87757
2004	6013609216.14314
2005	7102495538.58363
2006	7753486838.26193
2007	8904171303.73629
2008	10637217280.6015
2009	20012685893.5393
2010	21154289175.2968
2011	21337761378.6135
2012	19524567671.5007
2013	21012756470.9607
2014	24313200067.6389
2015	24691892717.6739
2016	22072752769.2169
2017	23668637950.2116
2018	25465256083.3057
2019	26867153493.5898
2020	28297174911.6383
2021	30031521812.2183