Year	Index 2010=1
1990-01-01	0.530542528360476
1991-01-01	0.524810631676266
1992-01-01	0.535988048688768
1993-01-01	0.542762925360464
1994-01-01	0.597403233999514
1995-01-01	0.628363080312948
1996-01-01	0.669206470745139
1997-01-01	0.697188421905247
1998-01-01	0.723633089041259
1999-01-01	0.718704200791549
2000-01-01	0.722565245409910
2001-01-01	0.730047457757694
2002-01-01	0.746095159588676
2003-01-01	0.769658801694337
2004-01-01	0.802099499055844
2005-01-01	0.857796228705433
2006-01-01	0.892468700078361
2007-01-01	0.884717487429155
2008-01-01	0.915863752346731
2009-01-01	0.952929054981986
2010-01-01	1.000000000000000