Year	Index
1999-01-01	30.405800000000000
2000-01-01	22.214100000000000
2001-01-01	21.796500000000000
2002-01-01	27.487300000000000
2003-01-01	28.713900000000000
2004-01-01	17.189500000000000
2005-01-01	10.625700000000000
2006-01-01	11.850400000000000
2007-01-01	13.492300000000000
2008-01-01	20.990100000000000
2009-01-01	37.981100000000000
2010-01-01	30.735500000000000
2011-01-01	26.203000000000003
2012-01-01	33.011400000000000
2013-01-01	27.659400000000000
2014-01-01	20.849000000000000
2015-01-01	24.111200000000000
2016-01-01	29.667400000000000
2017-01-01	24.917400000000000