Year	current US$
1977	543000000
1978	808000000
1979	883000000
1980	1214000000
1981	1532000000
1982	1523000000
1983	1516000000
1984	1385000000
1985	1862000000
1986	2130000000
1987	1856000000
1988	2024000000
1989	2682000000
1990	2897000000
1991	3313000000
1992	4565000000
1993	4617000000
1994	6749000000
1995	9323000000
1996	12929000000
1997	15130000000
1998	7465000000
1999	5176000000
2000	5619000000
2001	4923000000
2002	5575000000
2003	5666000000
2004	6743000000
2005	8610874061.72
2006	11064226221.57
2007	13501714680.06
2008	13054789170.87
2009	14084130105.62
2010	17770239990.9213
2011	18866201247.291
2012	20425378033.833908
2013	23321297797.684208
2014	25483484212.4589
2015	29047366366.906948
2016	31186162123.441418
2017	34812501415.61866
2018	38378241753.85386
2019	41244941365.33855
2020	31800353958.436832
2021	33548087713.17962
2022	41100903258.61862
2023	48258655589.03804