Year	Percent
1987-01-01	1.1945200000000000
1988-01-01	1.0546100000000000
1989-01-01	1.0104799999999998
1990-01-01	1.2066900000000000
1991-01-01	1.2448900000000000
1992-01-01	1.1250799999999999
1993-01-01	1.2910900000000000
1994-01-01	1.8456000000000000
1995-01-01	1.4495200000000001
1996-01-01	1.2259400000000000
1997-01-01	1.3987200000000000
1998-01-01	1.2263899999999999
1999-01-01	1.2003600000000000
2000-01-01	1.0539800000000000
2001-01-01	0.9319540000000001
2002-01-01	0.8943370000000000
2003-01-01	0.8840110000000001
2004-01-01	0.9247040000000001
2005-01-01	0.9235820000000000
2006-01-01	0.8495600000000000
2007-01-01	0.9511920000000000
2008-01-01	0.9257230000000000
2009-01-01	0.8429690000000001
2010-01-01	1.0853500000000000
2011-01-01	1.4680700000000000
2012-01-01	1.8584300000000000
2013-01-01	2.6811100000000000
2014-01-01	3.9767800000000000
2015-01-01	4.5791500000000000
2016-01-01	5.5324900000000000