Year	Percent
1995-01-01	31.0167057675000
1996-01-01	32.0483242650000
1997-01-01	34.6087119500000
1998-01-01	35.3215811250000
1999-01-01	34.7356389425000
2000-01-01	36.1173273600000
2001-01-01	34.7825815750000
2002-01-01	34.1582189475000
2003-01-01	34.1622941075000
2004-01-01	31.6062586100000
2005-01-01	31.5401793100000
2006-01-01	29.8903401725000
2007-01-01	28.6020200150000
2008-01-01	28.2619354200000
2009-01-01	27.9205008975000
2010-01-01	27.4588175325000
2011-01-01	25.8821659300000
2012-01-01	24.5000000000000
2013-01-01	23.2916666666667
2014-01-01	23.8500000000000
2015-01-01	23.4416666666667
2016-01-01	23.2166666666667
2017-01-01	22.6500000000000