Year	Percent
1991-01-01	4.92799997329712
1992-01-01	4.84000015258789
1993-01-01	4.87200021743774
1994-01-01	5.01499986648560
1995-01-01	5.13199996948242
1996-01-01	5.09000015258789
1997-01-01	5.09899997711182
1998-01-01	5.05999994277954
1999-01-01	5.06400012969971
2000-01-01	5.09399986267090
2001-01-01	5.08799982070923
2002-01-01	4.98199987411499
2003-01-01	4.85900020599365
2004-01-01	4.81199979782104
2005-01-01	4.79400014877319
2006-01-01	4.73000001907349
2007-01-01	4.70100021362305
2008-01-01	4.75299978256226
2009-01-01	4.90899991989136
2010-01-01	4.99900007247925
2011-01-01	5.58599996566772
2012-01-01	5.33099985122681
2013-01-01	5.36299991607666
2014-01-01	5.47599983215332
2015-01-01	5.59999990463257
2016-01-01	5.52099990844727
2017-01-01	5.51200008392334