Year	Percent
1989-01-01	0.1245370000000000
1990-01-01	0.2668450000000000
1991-01-01	0.7645340000000000
1992-01-01	1.0791300000000000
1993-01-01	3.4263900000000000
1994-01-01	4.5035000000000000
1995-01-01	3.0176200000000000
1996-01-01	0.5101630000000000
1997-01-01	1.1377700000000002
1998-01-01	1.7822500000000000
1999-01-01	1.4949299999999999
2000-01-01	0.9894330000000000
2001-01-01	0.7898200000000000
2002-01-01	1.3046000000000000
2003-01-01	2.6883900000000000
2004-01-01	2.9675300000000000
2005-01-01	3.3181800000000004
2006-01-01	3.5919100000000000
2007-01-01	2.9136599999999997
2008-01-01	2.5309800000000000
2009-01-01	2.5401900000000000
2010-01-01	5.3943100000000000
2011-01-01	7.6276899999999990
2012-01-01	4.3852199999999995
2013-01-01	2.1682099999999997
2014-01-01	2.5624200000000000
2015-01-01	2.6375500000000000
2016-01-01	1.7387299999999999
2017-01-01	2.0177900000000000