Year	US Dollar per National Currency Units
1986-01-01	0.0011609008590666402
1987-01-01	0.0012621481761958902
1988-01-01	0.0014617745943575500
1989-01-01	0.0014714537963507902
1990-01-01	0.0013958682300390800
1991-01-01	0.0013144058885383800
1992-01-01	0.0012683916793505801
1993-01-01	0.0012374706406996802
1994-01-01	0.0012679092177000102
1995-01-01	0.0012908222537756600
1996-01-01	0.0011845534093277300
1997-01-01	0.0005899705014749260
1998-01-01	0.0008305647840531561
1999-01-01	0.0008787346221441121
2000-01-01	0.0007908264136022141
2001-01-01	0.0007613247049866771
2002-01-01	0.0008430281571404480
2003-01-01	0.0008385041086701330
2004-01-01	0.0009660902328277461
2005-01-01	0.0009885330170027680
2006-01-01	0.0010755001075500100
2007-01-01	0.0010682619378271602
2008-01-01	0.0007939658594680430
2009-01-01	0.0008587376556462001
2010-01-01	0.0008812125484666901
2011-01-01	0.0008682062858135091
2012-01-01	0.0009340556697179151
2013-01-01	0.0009475080538184570
2014-01-01	0.0009096697898662790
2015-01-01	0.0008528784648187631
2016-01-01	0.0008280202036929700
2017-01-01	0.0009341429238673521