Year	Percent
1996-01-01	18.4114000000000000
1997-01-01	7.6953500000000000
1998-01-01	10.9320000000000000
1999-01-01	-1.9377900000000001
2000-01-01	2.8017800000000000
2001-01-01	11.7135000000000000
2002-01-01	14.5138000000000000
2003-01-01	8.1944699999999990
2004-01-01	7.7942300000000010
2005-01-01	9.9850800000000000
2006-01-01	3.5847200000000000
2007-01-01	7.8810600000000010
2008-01-01	13.1355000000000000
2009-01-01	17.6550000000000000
2010-01-01	18.5388000000000000
2011-01-01	21.3405000000000000
2012-01-01	20.7873000000000000
2013-01-01	21.4704000000000000
2014-01-01	20.5864000000000000
2015-01-01	22.5746000000000000
2016-01-01	4.0766500000000000