Year	Percent
2000-01-01	25.5550491187198
2001-01-01	25.6001969049611
2002-01-01	24.9255569170753
2003-01-01	25.1319549245973
2004-01-01	24.7811391250111
2005-01-01	25.1536703440729
2006-01-01	25.5209804729803
2007-01-01	25.5859335021265
2008-01-01	26.2222655991170
2009-01-01	26.7857007234257
2010-01-01	26.8135287767831
2011-01-01	26.6395395291399
2012-01-01	26.4554307132734
2013-01-01	26.4538941103688
2014-01-01	25.6417335878313
2015-01-01	25.8879359618423
2016-01-01	26.0054039636408
2017-01-01	25.9488472737774