Year	Percent
1995-01-01	8.79610
1996-01-01	32.28350
1997-01-01	40.89780
1998-01-01	27.30500
1999-01-01	9.59844
2000-01-01	22.70670
2001-01-01	4.20866
2002-01-01	3.50145
2003-01-01	2.16395
2004-01-01	2.29708
2005-01-01	6.01075
2006-01-01	13.38280
2007-01-01	15.30860
2008-01-01	9.34729
2009-01-01	4.15333
2010-01-01	6.24032
2011-01-01	3.31889
2012-01-01	2.85201