Year	Percent
1991-01-01	7.4608300000000005
1992-01-01	10.5033000000000000
1993-01-01	6.6616700000000000
1994-01-01	12.4650000000000000
1995-01-01	15.0883000000000000
1996-01-01	2.4850000000000000
1997-01-01	12.6325000000000000
1998-01-01	20.4783000000000000
1999-01-01	5.7657600000000000
2000-01-01	8.0113000000000000
2001-01-01	8.8083400000000000
2002-01-01	10.0748000000000000
2003-01-01	7.6153800000000000
2004-01-01	3.3653699999999995
2005-01-01	6.9058899999999990
2006-01-01	6.0687100000000000
2007-01-01	9.6700000000000000