Year	Percent
2000-01-01	3.441481
2001-01-01	3.006053
2002-01-01	2.475454
2003-01-01	1.216248
2004-01-01	1.439830
2005-01-01	1.484990
2006-01-01	19.278430
2007-01-01	6.697521
2008-01-01	21.187510
2009-01-01	21.274800
2010-01-01	13.717010