Year	Percent
1980-01-01	0.006470999999999999
1981-01-01	0.035068000000000000
1982-01-01	0.028064999999999996
1983-01-01	0.505339000000000000
1984-01-01	0.388677000000000000
1985-01-01	0.234960000000000000
1986-01-01	0.205728000000000020
1987-01-01	0.278030000000000000
1988-01-01	0.675608000000000000
1989-01-01	0.812806000000000000
1990-01-01	0.248557000000000030
1991-01-01	0.219320000000000000
1992-01-01	0.220796000000000000
1993-01-01	0.101562000000000000
1994-01-01	0.436090000000000000
1995-01-01	0.027638999999999997
1996-01-01	0.014016999999999998
1997-01-01	1.618660000000000000
1998-01-01	1.093700000000000000
1999-01-01	1.425900000000000000
2000-01-01	2.444990000000000000
2001-01-01	1.730820000000000000
2002-01-01	2.183230000000000000
2003-01-01	3.763870000000000000
2004-01-01	3.258240000000000200
2005-01-01	4.519680000000000000
2006-01-01	2.201100000000000000
2007-01-01	1.653990000000000000
2008-01-01	1.414150000000000000
2009-01-01	1.534520000000000000
2010-01-01	3.159800000000000000
2011-01-01	2.069620000000000000
2012-01-01	1.625079999999999900
2013-01-01	1.767640000000000000
2014-01-01	2.218690000000000000
2015-01-01	3.200520000000000000
2016-01-01	3.293180000000000400