Year	Percent
1995-01-01	2.17158
1996-01-01	3.39384
1997-01-01	8.52625
1998-01-01	7.04195
1999-01-01	4.47805
2000-01-01	7.69165
2001-01-01	11.52860
2002-01-01	18.50700
2003-01-01	16.91990
2004-01-01	16.69120
2005-01-01	14.38080
2006-01-01	14.31230
2007-01-01	13.18070
2008-01-01	12.10690
2009-01-01	12.96550
2010-01-01	12.96990
2011-01-01	12.84280
2012-01-01	6.37594
2013-01-01	5.86418