Year	Percent
1980-01-01	0.997816000000000000
1981-01-01	0.902418000000000000
1982-01-01	0.821292000000000000
1983-01-01	0.801012000000000000
1984-01-01	0.772320000000000000
1985-01-01	0.384907000000000000
1986-01-01	0.033506000000000000
1987-01-01	0.033406000000000000
1988-01-01	0.038636000000000004
1989-01-01	0.038422000000000005
1990-01-01	0.035336000000000000
1991-01-01	0.032192000000000000
1992-01-01	0.028368000000000000
1993-01-01	0.025848000000000003
1994-01-01	0.024227000000000002
1995-01-01	0.023735000000000000
1996-01-01	0.089649000000000000
1997-01-01	1.115780000000000000
1998-01-01	1.004570000000000000
1999-01-01	0.956518000000000000
2000-01-01	0.949933000000000000
2001-01-01	3.053730000000000000
2002-01-01	3.732220000000000000
2003-01-01	4.020740000000000000
2004-01-01	3.828960000000000000
2005-01-01	4.970160000000000000
2006-01-01	2.564820000000000000
2007-01-01	3.655719999999999600
2008-01-01	3.323690000000000000
2009-01-01	3.080330000000000000
2010-01-01	2.286030000000000000
2011-01-01	3.943980000000000300
2012-01-01	7.126390000000000000
2013-01-01	6.211260000000000000
2014-01-01	6.809730000000000000
2015-01-01	6.938860000000001000
2016-01-01	9.152239999999999000