Year	Percent
1999-01-01	0.39799999999999996
2000-01-01	8.52068000000000000
2001-01-01	7.85699000000000000
2002-01-01	9.14330000000000000
2003-01-01	10.90000000000000000
2004-01-01	11.91080000000000000
2005-01-01	10.15280000000000000
2006-01-01	10.78380000000000000
2007-01-01	9.30268000000000000
2008-01-01	4.30451000000000000
2009-01-01	7.69954000000000000
2010-01-01	6.35827000000000000
2011-01-01	5.31189000000000000
2012-01-01	6.73166000000000100
2013-01-01	8.86032000000000000
2014-01-01	10.96130000000000000
2015-01-01	13.23290000000000000
2016-01-01	14.77110000000000000