Year	current US$
1960	187017624.7934089
1961	218194460.34479755
1962	221930266.30155697
1963	258264804.13137817
1964	330533061.9969089
1965	338691142.424194
1966	372845040.1204726
1967	392274888.3990028
1968	521479840.74013394
1969	500460515.2164343
1970	520616378.89442617
1971	510247677.2498566
1972	619773296.917167
1973	896858258.0339935
1974	1402964048.8733687
1975	1430151941.390369
1976	1946009810.718366
1977	2670550587.6845245
1978	2885367253.037435
1979	3163758913.9730415
1980	3561631957.7159276
1981	2966163806.587381
1982	2756186089.3742642
1983	2527383512.604624
1984	3100078628.849663
1985	3263790016.8948493
1986	3617154609.064938
1987	3372301898.828536
1988	3126609347.6288342
1989	3125624101.39681
1990	3421191519.2646947
1991	3149018975.9939556
1992	3558855910.689882
1993	3252142767.4240813
1994	3369268861.3354235
1995	4593584042.875456
1996	5069827394.818552
1997	5082544458.920144
1998	5333495972.7852335
1999	5423051765.22103
2000	4606906376.947101
2001	4617823364.170537
2002	5662064299.806122
2003	6107969564.258766
2004	7086390530.618888
2005	7662724560.141306
2006	8302651291.846568
2007	8769225735.993803
2008	10568912669.898163
2009	12000249512.738773
2010	11703514551.064054
2011	12946046205.342146
2012	12699449618.42781
2013	12469056844.635298
2014	13752704950.02069
2015	12531890057.425758
2016	12073797174.534029
2017	13390010535.484175
2018	13281208105.210386
2019	13683059068.903353
2020	13231732415.036741
2021	16230487159.254086
2022	17211115086.128338
2023	18015656996.431496