Year	Percent
1997-01-01	3.9077900000000003
1998-01-01	9.0243899999999990
1999-01-01	6.8300399999999994
2000-01-01	9.9145500000000000
2001-01-01	11.2948000000000000
2002-01-01	10.3671000000000000
2003-01-01	9.5492700000000000
2004-01-01	13.1919000000000000
2005-01-01	12.8456000000000000
2006-01-01	20.9877000000000000
2007-01-01	6.0827800000000005
2008-01-01	-11.3242000000000000
2009-01-01	6.6568300000000000
2010-01-01	9.1876900000000000
2011-01-01	3.2924200000000000
2012-01-01	8.6365000000000000
2013-01-01	9.5562100000000000
2014-01-01	1.9317799999999998
2015-01-01	8.0393200000000000
2016-01-01	9.7607000000000000