Year	Index 2010=1
1990-01-01	0.660601239792186
1991-01-01	0.666592450081672
1992-01-01	0.671173561156498
1993-01-01	0.664718913797342
1994-01-01	0.676544715468537
1995-01-01	0.684226232620758
1996-01-01	0.701840052395995
1997-01-01	0.712941170397543
1998-01-01	0.724870493537184
1999-01-01	0.717294639183438
2000-01-01	0.707734053327181
2001-01-01	0.726719033761259
2002-01-01	0.743970126626528
2003-01-01	0.766521816155456
2004-01-01	0.796818049837500
2005-01-01	0.835392697935115
2006-01-01	0.877285223731883
2007-01-01	0.896455671186370
2008-01-01	0.947057562956743
2009-01-01	0.975906791787544
2010-01-01	1.000000000000000