Year	Percent
1996-01-01	30.68190000000000
1997-01-01	32.25430000000000
1998-01-01	39.52100000000000
1999-01-01	43.94270000000000
2000-01-01	43.60480000000000
2001-01-01	36.02320000000000
2002-01-01	39.83480000000000
2003-01-01	54.37320000000000
2004-01-01	46.68140000000000
2005-01-01	46.32720000000000
2006-01-01	44.29240000000000
2007-01-01	38.45470000000000
2008-01-01	34.30270000000000
2009-01-01	38.41280000000000
2010-01-01	45.49560000000000
2011-01-01	41.48260000000000
2012-01-01	49.17490000000000
2013-01-01	45.68260000000000
2014-01-01	51.57899999999999