Year	Percent
1998-01-01	10.9129000000000000
1999-01-01	10.0290000000000000
2000-01-01	3.8805900000000000
2001-01-01	6.6582600000000000
2002-01-01	5.4146100000000000
2003-01-01	6.3178400000000000
2004-01-01	4.9940200000000000
2005-01-01	4.3901300000000000
2006-01-01	4.4651200000000000
2007-01-01	3.9269000000000000
2008-01-01	4.8369800000000005
2009-01-01	5.6036100000000000
2010-01-01	5.2376400000000000
2011-01-01	5.2757400000000000
2012-01-01	4.8250600000000000
2013-01-01	4.9524200000000000
2014-01-01	4.3436699999999995
2015-01-01	5.3581699999999990
2016-01-01	3.9767400000000000