Year	Percent
1995-01-01	26.7242
1996-01-01	24.2267
1997-01-01	25.1427
1998-01-01	25.1427
1999-01-01	21.3651
2000-01-01	23.6832
2001-01-01	36.6772
2002-01-01	32.6082
2003-01-01	33.6509
2004-01-01	31.0193
2005-01-01	28.9237
2006-01-01	45.6368
2007-01-01	37.1067
2008-01-01	26.3913
2009-01-01	26.7101
2010-01-01	20.8019
2011-01-01	21.2911
2012-01-01	22.4877
2013-01-01	21.2013
2014-01-01	21.6246
2015-01-01	20.9462
2016-01-01	19.5829