Year	Index 2010=1
1987-01-01	0.671465814203826
1988-01-01	0.667160046314620
1989-01-01	0.659773509335550
1990-01-01	0.672639777025479
1991-01-01	0.694954939118383
1992-01-01	0.726059903160687
1993-01-01	0.741683452261698
1994-01-01	0.741311498939849
1995-01-01	0.745116440108778
1996-01-01	0.754706249629804
1997-01-01	0.762319759969969
1998-01-01	0.781866807695238
1999-01-01	0.798524079461088
2000-01-01	0.822920972763757
2001-01-01	0.861140683683094
2002-01-01	0.897537728248344
2003-01-01	0.918192007741774
2004-01-01	0.922181009812358
2005-01-01	0.918591903431003
2006-01-01	0.925361458685332
2007-01-01	0.940598278980547
2008-01-01	0.961901553233340
2009-01-01	1.011931341191430
2010-01-01	1.000000000000000