Year	US Dollars adjusted for inflation)
1987	206227774393.55008
1988	211520534475.94202
1989	219712943088.034
1990	205771640241.36896
1991	188464920358.88898
1992	170185710406.26996
1993	145974909345.22903
1994	112496957167.69998
1995	98772328368.36526
1996	88895095556.73158
1997	86228242665.96098
1998	84589906068.85422
1999	84420726258.88399
2000	89401549107.8179
2001	97626491632.6427
2002	102703069169.31299
2003	112357157681.839
2004	125952373771.35901
2005	129353087832.048
2006	138795863286.95999
2007	149760737549.776
2008	153205234500.22699
2009	130530859771.15802
2010	136013155905.03598
2011	143446998336.60999
2012	143789379505.01501
2013	143750945108.12003
2014	134331493522.85899
2015	121203311658.85399
2016	124000201623.06601
2017	127100786329.95598