Year	Percent
1995-01-01	94.574100000000000
1996-01-01	78.079400000000000
1997-01-01	49.873000000000005
1998-01-01	35.823200000000000
1999-01-01	13.583500000000000
2000-01-01	16.931600000000000
2001-01-01	15.722200000000000
2002-01-01	35.384100000000000
2003-01-01	39.128600000000000
2004-01-01	33.437600000000000
2005-01-01	23.487100000000000
2006-01-01	10.413400000000000
2007-01-01	10.284300000000000
2008-01-01	4.140480000000000