Year	Current U.S. Dollars
1981-01-01	2310099100.000000
1982-01-01	2552401933.333330
1983-01-01	2725736633.333330
1984-01-01	2098734600.000000
1985-01-01	2186505475.000000
1986-01-01	2896178866.666670
1987-01-01	3020611600.000000
1988-01-01	3204461566.666670
1989-01-01	3576966800.000000
1990-01-01	2560785660.000000
1991-01-01	2379018326.315790
1992-01-01	1317611863.849770
1993-01-01	768401634.154573
1994-01-01	925817092.217484
1995-01-01	1452165005.238400
1996-01-01	1345719472.358830
1997-01-01	1180934202.838010
1998-01-01	1124440248.978300
1999-01-01	1057408588.682690
2000-01-01	1136896123.612980
2001-01-01	1267997934.312500
2002-01-01	1396555719.974090
2003-01-01	1595297355.783490
2004-01-01	1992066808.095980
2005-01-01	2523471532.010830
2006-01-01	3414055566.113800
2007-01-01	4234999823.308390
2008-01-01	5623216448.868510
2009-01-01	4583850367.889720
2010-01-01	7189481824.072880
2011-01-01	10409797649.306300
2012-01-01	12292770631.196700
2013-01-01	12582122604.192100
2014-01-01	12226514722.086100
2015-01-01	11749620619.596200
2016-01-01	11183458130.808300
2017-01-01	11488046881.043100