Year	Percent
2000-01-01	7.878728795663410
2001-01-01	8.330421975127620
2002-01-01	6.280780757221100
2003-01-01	5.334124827943490
2004-01-01	5.051335884467430
2005-01-01	4.353141256502600
2006-01-01	2.094909179214580
2007-01-01	0.893845582670919
2008-01-01	3.022897144803700
2009-01-01	7.208484434860220
2010-01-01	13.943781292109800
2011-01-01	8.976079117928010
2012-01-01	5.394104028271740
2013-01-01	4.328914802162460
2014-01-01	5.235079646551070
2015-01-01	5.480857278723350
2016-01-01	6.936846429923180
2017-01-01	4.271656328246360