Year	Percent
1999-01-01	31.50240000000000
2000-01-01	36.54560000000000
2001-01-01	39.17690000000000
2002-01-01	45.37550000000000
2003-01-01	50.62780000000000
2004-01-01	55.39260000000000
2005-01-01	58.23620000000000
2006-01-01	71.49080000000000
2007-01-01	78.21270000000000
2008-01-01	73.44110000000000
2009-01-01	110.13900000000000
2010-01-01	105.93400000000000
2011-01-01	101.87899999999999
2012-01-01	101.50800000000000
2013-01-01	93.51380000000000
2014-01-01	86.23310000000000
2015-01-01	88.44450000000000
2016-01-01	86.67020000000000