Year	Index 2010=1
1975-01-01	0.279869883426733
1976-01-01	0.320136194787324
1977-01-01	0.341201464879460
1978-01-01	0.346861837786027
1979-01-01	0.368729413447911
1980-01-01	0.406209666476661
1981-01-01	0.462427443241989
1982-01-01	0.499868939450106
1983-01-01	0.532824077616859
1984-01-01	0.574598809348128
1985-01-01	0.614622654107657
1986-01-01	0.643464390847919
1987-01-01	0.675812450262199
1988-01-01	0.708836547062512
1989-01-01	0.751272132028039
1990-01-01	0.806689646693228
1991-01-01	0.862273349627596
1992-01-01	0.845586690392039
1993-01-01	0.801772857009723
1994-01-01	0.783463006521325
1995-01-01	0.798034912101225
1996-01-01	0.802437995694689
1997-01-01	0.796360499677459
1998-01-01	0.807293387730767
1999-01-01	0.811255549118370
2000-01-01	0.811219444370360
2001-01-01	0.839197844882084
2002-01-01	0.848949527993623
2003-01-01	0.862853708571956
2004-01-01	0.863417486101480
2005-01-01	0.883087660369456
2006-01-01	0.887540794912253
2007-01-01	0.886078833254900
2008-01-01	0.939685432054553
2009-01-01	1.016336997233970
2010-01-01	1.000000000000000