Year	Percent
2005-01-01	8.12076541775368
2006-01-01	7.38850876091426
2007-01-01	6.57277315902515
2008-01-01	6.82700002985357
2009-01-01	9.37727072604671
2010-01-01	9.94730675182846
2011-01-01	9.92575200488265
2012-01-01	11.17225510004410
2013-01-01	11.83680456777810
2014-01-01	11.45120978474930
2015-01-01	10.68088695664380
2016-01-01	9.70475913989312
2017-01-01	8.70599466600514