Year	Index
1999-01-01	21.173800000000000
2000-01-01	22.640600000000000
2001-01-01	15.456000000000000
2002-01-01	10.533400000000000
2003-01-01	10.672400000000000
2004-01-01	10.320700000000000
2005-01-01	11.722999999999999
2006-01-01	15.987400000000000
2007-01-01	15.183000000000000
2008-01-01	10.454600000000000
2009-01-01	13.107200000000000
2010-01-01	13.885000000000000
2011-01-01	11.524000000000001
2012-01-01	9.929550000000000
2013-01-01	8.903910000000000
2014-01-01	8.329070000000000
2015-01-01	7.983250000000000
2016-01-01	7.082380000000001
2017-01-01	6.338570000000000