Year	Percent
1986-01-01	7.43333333333314
1987-01-01	8.15234253800876
1988-01-01	1.31965861005482
1989-01-01	12.93268209810990
1990-01-01	6.60022564874020
1991-01-01	5.62866666666697
1992-01-01	10.14181756215110
1993-01-01	9.37034415971456
1994-01-01	4.12825861295444
1995-01-01	6.54379068524170
1996-01-01	4.68130623916412
1997-01-01	4.62534695318395
1998-01-01	8.03166665498855
1999-01-01	4.07417613596756
2000-01-01	3.25406745833358
2001-01-01	4.71489634689610
2002-01-01	3.89570525758491
2003-01-01	5.15190150769576
2004-01-01	10.36762334730730
2005-01-01	12.12564871855410
2006-01-01	6.24103328142821
2007-01-01	7.25410841304886
2008-01-01	7.34663541249786
2009-01-01	2.22092032381780
2010-01-01	6.28354087427708
2011-01-01	5.68631959575963
2012-01-01	4.90242727217991
2013-01-01	4.12910173783393
2014-01-01	3.53436856147326
2015-01-01	3.25472688117633
2016-01-01	1.47171045649997
2017-01-01	2.25427651934813