Year	Percent
1999-01-01	0.910403311
2000-01-01	1.029064059
2001-01-01	0.825898826
2002-01-01	1.176813960
2003-01-01	1.251302838
2004-01-01	1.361378908
2005-01-01	1.460543871
2006-01-01	1.589231372
2007-01-01	1.501783013
2008-01-01	1.295063496
2009-01-01	1.234686255
2010-01-01	1.484487295
2011-01-01	1.623814225
2012-01-01	1.883788586
2013-01-01	1.999747753