Year	Percent
1996-01-01	24.2229
1997-01-01	28.8997
1998-01-01	34.0508
1999-01-01	43.7226
2000-01-01	39.6146
2001-01-01	25.9765
2002-01-01	22.4293
2003-01-01	32.6913
2004-01-01	34.6556
2005-01-01	36.2499
2006-01-01	34.0178
2007-01-01	29.3283
2008-01-01	30.6942
2009-01-01	32.5633
2010-01-01	33.9283
2011-01-01	34.7182
2012-01-01	34.1672
2013-01-01	33.3154
2014-01-01	31.9590