Year	current US$
1960	89500000
1961	86800000
1962	126100000
1963	151800000
1964	160100000
1965	167700000
1966	147700000
1967	135700000
1968	144700000
1969	156100000
1970	171990100
1971	169075800
1972	177700600
1973	193605600
1974	291513600
1975	222072600
1976	151909200
1977	189347600
1978	271148500
1979	419581100
1980	504000000
1981	693000000
1982	779400000
1983	786300000
1984	870754000
1985	357288807.32813126
1986	446677429.89526343
1987	233540732.60267615
1988	190375601.4093703
1989	196046703.47003156
1990	206978898.10329255
1991	315921245.9940303
1992	446024000
1993	586432000
1994	717259078.7823834
1995	804848484.8484849
1996	945391598.8160679
1997	1415444225.3386977
1998	1586800235.678014
1999	1745260170.400829
2000	2119549425.0270898
2001	2439907298.333074
2002	2706041092.1498294
2003	1848566564.5216208
2004	1693843702.3428037
2005	2894186694.972276
2006	3328510015.0795636
2007	4034739954.824978
2008	4839507296.413623
2009	5166621837.187984
2010	5346760770.914828
2011	5409619084.538965
2012	5999065459.849862
2013	6549241674.19816
2014	7034607940.684194
2015	7321968248.148389
2016	7799615486.512764
2017	8750701086.569845
2018	9291193012.287437
2019	9844740217.430761
2020	9955411484.77954
2021	10805114631.019873
2022	12879959320.650696
2023	13711094850.919554