Year	Percent
2000-01-01	33.87864
2001-01-01	32.56675
2002-01-01	32.77957
2003-01-01	32.67315
2004-01-01	31.11332
2005-01-01	29.86649
2006-01-01	31.59624
2007-01-01	34.17321
2008-01-01	38.53866
2009-01-01	39.35678
2010-01-01	39.18357