Year	Percent
1980-01-01	0.19172700000000000
1981-01-01	0.20424100000000000
1982-01-01	0.45662400000000000
1983-01-01	0.79800700000000000
1984-01-01	0.72002000000000000
1985-01-01	0.70561100000000000
1986-01-01	1.06999000000000000
1987-01-01	1.22753000000000000
1988-01-01	1.18062999999999980
1989-01-01	0.88612900000000010
1990-01-01	0.74337100000000000
1991-01-01	0.60893500000000000
1992-01-01	0.46027799999999996
1993-01-01	0.15317800000000000
1994-01-01	0.13539900000000000
1995-01-01	0.11899700000000000
1996-01-01	0.25136200000000000
1997-01-01	0.25506400000000000
1998-01-01	0.51435500000000000
1999-01-01	0.41447399999999995
2000-01-01	0.37043300000000000
2001-01-01	0.21569899999999997
2002-01-01	0.18006100000000000
2003-01-01	0.15234000000000000
2004-01-01	0.48551800000000000
2005-01-01	1.14641000000000000
2006-01-01	1.34513000000000000
2007-01-01	1.44164000000000000
2008-01-01	1.94210999999999980
2009-01-01	2.92791000000000000
2010-01-01	2.56183000000000000
2011-01-01	2.47985000000000000
2012-01-01	3.11422000000000000
2013-01-01	3.48523000000000050
2014-01-01	3.86869000000000000
2015-01-01	5.44799999999999950
2016-01-01	6.08791000000000000