Year	Percent
2001-01-01	2.377590000000000
2002-01-01	2.427940000000000
2003-01-01	2.828440000000000
2004-01-01	3.872290000000000
2005-01-01	4.925230000000000
2006-01-01	5.331210000000000
2007-01-01	4.771040000000000
2008-01-01	4.498200000000000
2009-01-01	5.309870000000000
2010-01-01	6.794630000000001
2011-01-01	7.347169999999999