Year	Percent
1996-01-01	30.1169
1997-01-01	27.3604
1998-01-01	38.5564
1999-01-01	24.3590
2000-01-01	23.3646
2001-01-01	21.6521
2002-01-01	45.2473
2003-01-01	67.9407
2004-01-01	60.8555
2005-01-01	53.0045
2006-01-01	34.2127
2007-01-01	36.9667
2008-01-01	75.3169
2009-01-01	32.9360
2010-01-01	39.7199
2011-01-01	33.0403
2012-01-01	28.3227
2013-01-01	46.1296
2014-01-01	48.9318