Year	Percent
1996-01-01	49.4364
1997-01-01	49.1452
1998-01-01	53.2546
1999-01-01	55.6179
2000-01-01	44.0502
2001-01-01	43.4064
2002-01-01	45.4433
2003-01-01	39.5796
2004-01-01	36.1697
2005-01-01	33.3441
2006-01-01	34.9871
2007-01-01	22.1040
2008-01-01	25.1816
2009-01-01	23.5667
2010-01-01	30.1416
2011-01-01	29.3783
2012-01-01	35.4788
2013-01-01	34.4853
2014-01-01	34.0159