Year	Percent
1989-01-01	4.8310100000000000
1990-01-01	5.3956500000000000
1991-01-01	5.1155100000000000
1992-01-01	4.8478200000000000
1993-01-01	2.9945500000000000
1994-01-01	1.3905200000000000
1995-01-01	0.3897170000000000
1996-01-01	0.5112180000000001
1997-01-01	8.9356700000000000
1998-01-01	14.6894000000000000
1999-01-01	12.4809000000000000
2000-01-01	7.4128100000000000
2001-01-01	6.3302000000000000
2002-01-01	9.5015900000000000
2003-01-01	10.6700000000000000
2004-01-01	11.8231000000000000
2005-01-01	13.0443000000000000
2006-01-01	18.4350000000000000
2007-01-01	31.8818000000000000
2008-01-01	33.9529000000000000
2009-01-01	26.4232000000000000
2010-01-01	25.9391000000000000
2011-01-01	27.4761000000000000
2012-01-01	25.0069999999999980
2013-01-01	37.8261000000000000
2014-01-01	34.4257000000000000
2015-01-01	35.0993000000000000