Year	Percent
2005-01-01	60.0534258729511
2006-01-01	60.9624869775459
2007-01-01	61.0010759237436
2008-01-01	60.6658621421472
2009-01-01	59.7840055095966
2010-01-01	59.6613568497504
2011-01-01	60.0242859832911
2012-01-01	60.9089140540313
2013-01-01	60.8421975407172
2014-01-01	60.4080502257246
2015-01-01	60.7451513659427
2016-01-01	61.0471718445545
2017-01-01	61.1286346722467