Year	Percent
1996-01-01	25.6264
1997-01-01	34.5957
1998-01-01	16.7081
1999-01-01	28.8506
2000-01-01	22.2700
2001-01-01	28.5706
2002-01-01	34.1446
2003-01-01	40.8739
2004-01-01	31.2938
2005-01-01	34.1259
2006-01-01	33.2674
2007-01-01	28.1946
2008-01-01	26.0202
2009-01-01	33.5328
2010-01-01	32.1528
2011-01-01	29.2871
2012-01-01	28.3396
2013-01-01	29.3608
2014-01-01	30.2339