Year	Percent
1996-01-01	20.97410000000000
1997-01-01	24.33560000000000
1998-01-01	19.22860000000000
1999-01-01	10.19860000000000
2000-01-01	9.75155000000000
2001-01-01	24.83380000000000
2002-01-01	68.91199999999999
2003-01-01	67.49930000000000
2004-01-01	49.82460000000000
2005-01-01	43.49600000000000
2006-01-01	33.47220000000000
2007-01-01	25.26060000000000
2008-01-01	40.27800000000000
2009-01-01	45.96320000000000
2010-01-01	38.50680000000000
2011-01-01	41.46040000000000
2012-01-01	41.11310000000000
2013-01-01	39.81670000000000
2014-01-01	37.60750000000000