Year	Percent
1993-01-01	15.464700000000000
1994-01-01	15.724500000000000
1995-01-01	14.274400000000000
1996-01-01	15.770200000000000
1997-01-01	18.784200000000000
1998-01-01	20.877600000000000
1999-01-01	22.285600000000000
2000-01-01	24.473500000000000
2001-01-01	27.998200000000000
2002-01-01	30.001500000000000
2003-01-01	30.077700000000000
2004-01-01	31.220400000000000
2005-01-01	35.235600000000000
2006-01-01	40.056999999999995
2007-01-01	40.284900000000000
2008-01-01	44.973300000000000
2009-01-01	53.515800000000000
2010-01-01	53.929500000000000
2011-01-01	51.032700000000000
2012-01-01	51.208800000000000
2013-01-01	52.099700000000000
2014-01-01	53.710800000000000
2015-01-01	57.768500000000000
2016-01-01	61.299200000000000