Year	Percent
1991-01-01	1.712000012397770
1992-01-01	1.710999965667720
1993-01-01	1.615000009536740
1994-01-01	1.516000032424930
1995-01-01	1.424000024795530
1996-01-01	1.327999949455260
1997-01-01	1.235999941825870
1998-01-01	1.144000053405760
1999-01-01	1.055999994277950
2000-01-01	0.967999994754791
2001-01-01	0.883000016212463
2002-01-01	0.834999978542328
2003-01-01	1.018000006675720
2004-01-01	1.205000042915340
2005-01-01	1.388000011444090
2006-01-01	1.582000017166140
2007-01-01	1.779000043869020
2008-01-01	1.970999956130980
2009-01-01	2.160000085830690
2010-01-01	2.194000005722050
2011-01-01	5.400000095367430
2012-01-01	5.405000209808350
2013-01-01	5.410999774932860
2014-01-01	5.408999919891360
2015-01-01	5.399000167846680
2016-01-01	5.283999919891360
2017-01-01	5.185999870300290