Year	Percent
1997-01-01	79.2217000000000000
1998-01-01	40.7686000000000000
1999-01-01	10.8577000000000000
2000-01-01	20.1704000000000000
2001-01-01	15.1906000000000000
2002-01-01	17.3818000000000000
2003-01-01	24.7777000000000000
2004-01-01	24.5414000000000000
2005-01-01	21.8079000000000000
2006-01-01	24.0948000000000000
2007-01-01	26.9508000000000000
2008-01-01	19.5693000000000000
2009-01-01	10.5250000000000000
2010-01-01	-6.7665000000000000
2011-01-01	5.5141599999999995
2012-01-01	9.6749100000000000
2013-01-01	12.1023000000000000
2014-01-01	10.4270000000000000
2015-01-01	-26.1042000000000000
2016-01-01	-8.8855100000000000