Year	US Dollars adjusted for inflation)
1980	346881371656.16315
1981	352436107526.75604
1982	347821247668.92603
1983	350044101778.005
1984	360575026071.04095
1985	373821095508.40002
1986	380769056936.78394
1987	386806067212.60004
1988	399484008361.05402
1989	416784837993.93011
1990	432100120508.06995
1991	428142876037.409
1992	427955636280.10297
1993	427416482616.20197
1994	432843636283.60712
1995	434925036081.25897
1996	437273751336.58496
1997	447506612519.81696
1998	460886576236.65509
1999	468697312455.52991
2000	487149098174.328
2001	493542558241.66797
2002	494345122120.21594
2003	494540766952.35901
2004	508270323943.99695
2005	524104192489.58899
2006	545008791663.24292
2007	567418887241.50793
2008	579645072565.33093
2009	566764738131.47913
2010	583782977866.40503
2011	593665305708.96912
2012	599637721742.46301
2013	610743250749.21631
2014	625701684969.81799
2015	633375192571.14221
2016	642089703646.21509
2017	649067884586.90894