Year	Percent
1995-01-01	8.930724144
1996-01-01	6.601455212
1997-01-01	4.383631229
1998-01-01	11.278089520
1999-01-01	15.579700470
2000-01-01	15.446089740
2001-01-01	14.216239930
2002-01-01	15.528989790
2003-01-01	8.800506592
2004-01-01	7.510328770
2005-01-01	4.881004810
2006-01-01	4.079882145
2007-01-01	4.154244900
2008-01-01	4.214014053
2009-01-01	4.489465237
2010-01-01	4.790975094
2011-01-01	6.579942226
2012-01-01	3.883134365
2013-01-01	1.526418805