Year	Percent
1980-01-01	0.44965100000000000
1981-01-01	0.58935600000000000
1982-01-01	0.71184500000000000
1983-01-01	1.08086000000000000
1984-01-01	0.48319200000000000
1985-01-01	0.73343700000000000
1986-01-01	1.42682999999999980
1987-01-01	0.26283000000000000
1988-01-01	0.47700800000000000
1989-01-01	0.35567600000000005
1990-01-01	0.35567600000000005
1991-01-01	0.35567600000000005
1992-01-01	0.35567600000000005
1993-01-01	0.62088900000000000
1994-01-01	0.66566800000000000
1995-01-01	0.70370000000000000
1996-01-01	0.85600700000000000
1997-01-01	0.57012800000000000
1998-01-01	0.51993500000000000
1999-01-01	0.45374500000000000
2000-01-01	0.47724399999999995
2001-01-01	1.07872000000000010
2002-01-01	2.16486000000000000
2003-01-01	2.42781000000000000
2004-01-01	2.20466000000000000
2005-01-01	1.86490000000000000
2006-01-01	1.83130999999999980
2007-01-01	1.54110000000000000
2008-01-01	1.38069000000000000
2009-01-01	1.44596000000000010
2010-01-01	2.34850999999999970
2011-01-01	3.44476000000000000
2012-01-01	3.72252000000000000
2013-01-01	4.49541000000000000
2014-01-01	3.89805999999999960
2015-01-01	4.06379000000000000
2016-01-01	4.61874000000000000