Year	Percent
1992-01-01	10.195000000
1993-01-01	9.826296296
1994-01-01	17.032307690
1995-01-01	15.270000000
1996-01-01	16.470000000
1997-01-01	14.620000000
1998-01-01	14.550000000
1999-01-01	11.960000000
2000-01-01	8.660000000
2001-01-01	5.950000000
2002-01-01	9.640000000
2003-01-01	5.420000000
2004-01-01	4.080000000
2005-01-01	4.600000000
2006-01-01	5.120000000
2007-01-01	4.080000000
2008-01-01	2.540000000
2009-01-01	1.000000000
2010-01-01	2.020000000
2011-01-01	2.780000000
2012-01-01	2.020000000
2013-01-01	1.000000000
2014-01-01	0.260000000
2015-01-01	0.100000000
2016-01-01	0.100000000
2017-01-01	0.100000000