Year	Index 2010=1
1978-01-01	0.229746171399258
1979-01-01	0.266447838630191
1980-01-01	0.304602045795921
1981-01-01	0.345693593689747
1982-01-01	0.396029565986713
1983-01-01	0.436458472742644
1984-01-01	0.480108182477098
1985-01-01	0.500170865296035
1986-01-01	0.495960521099376
1987-01-01	0.511249545139567
1988-01-01	0.512667722120224
1989-01-01	0.529386607380968
1990-01-01	0.536652677415380
1991-01-01	0.548457137200696
1992-01-01	0.558864806501581
1993-01-01	0.601718535755969
1994-01-01	0.611960075767239
1995-01-01	0.604923328874575
1996-01-01	0.628172669380670
1997-01-01	0.636701118311098
1998-01-01	0.641717627282627
1999-01-01	0.633204934763214
2000-01-01	0.651053314729626
2001-01-01	0.655034332472157
2002-01-01	0.701335523802148
2003-01-01	0.740375091400254
2004-01-01	0.778300979057202
2005-01-01	0.804065304121109
2006-01-01	0.852541009437974
2007-01-01	0.880119047850705
2008-01-01	0.924444379589998
2009-01-01	0.954616979138576
2010-01-01	1.000000000000000