Year	US Dollars adjusted for inflation)
1977	322802913.51426
1978	336953370.40288
1979	364178334.65056
1980	393900513.86108
1981	408927490.92411
1982	408583955.63961
1983	430500438.41901
1984	474260812.68638
1985	510512315.60934
1986	569189724.05397
1987	606906345.33527
1988	638546003.01115
1989	672084214.89672
1990	692325010.73995
1991	707396047.77679
1992	715590002.02221
1993	753373665.68847
1994	803670361.916
1995	768634400.78923
1996	819401304.72595
1997	864231831.15789
1998	905121350.28982
1999	938682296.12804
2000	1001496497.16983
2001	951881612.47307
2002	961629840.26819
2003	1019884496.57692
2004	1078389764.69155
2005	1147540485.65063
2006	1293605261.82583
2007	1413385613.40099
2008	1412959714.1241
2009	1241885105.44827
2010	1152469074.07407
2011	1128507777.84862
2012	1168080135.6583
2013	1166866043.20336
2014	1226398852.85
2015	1276193331.63173
2016	1344373697.9233
2017	1389236109.8626