Year	Percent
1980-01-01	0.196726000000000000
1981-01-01	0.234771999999999980
1982-01-01	0.312984000000000040
1983-01-01	0.236313000000000020
1984-01-01	0.136504000000000000
1985-01-01	0.062673000000000000
1986-01-01	0.037204000000000000
1987-01-01	0.056967000000000000
1988-01-01	0.024322999999999997
1989-01-01	0.091709000000000000
1990-01-01	0.034057000000000000
1991-01-01	0.022484000000000000
1992-01-01	0.019426000000000000
1993-01-01	0.017208000000000000
1994-01-01	0.009785000000000000
1995-01-01	0.397376000000000000
1996-01-01	0.514390999999999900
1997-01-01	0.917435000000000000
1998-01-01	1.332540000000000000
1999-01-01	1.785270000000000100
2000-01-01	1.303610000000000000
2001-01-01	1.041700000000000000
2002-01-01	1.656640000000000100
2003-01-01	1.638480000000000000
2004-01-01	1.261780000000000000
2005-01-01	0.907338999999999900
2006-01-01	1.249370000000000000
2007-01-01	1.440360000000000000
2008-01-01	1.338310000000000000
2009-01-01	2.245550000000000000
2010-01-01	1.839280000000000000
2011-01-01	1.088270000000000000
2012-01-01	1.448670000000000100
2013-01-01	1.865230000000000000
2014-01-01	2.096850000000000000
2015-01-01	2.243160000000000000
2016-01-01	1.620930000000000000