Year	Ratio
1974-01-01	1.03357994556427
1975-01-01	1.04443001747131
1976-01-01	1.05110001564026
1979-01-01	1.07966005802155
1980-01-01	1.06051003932953
1983-01-01	1.09660995006561
1991-01-01	1.10136997699738
1993-01-01	1.24024999141693
1994-01-01	1.29785001277924
1995-01-01	1.33223998546600
1996-01-01	1.31859004497528
1997-01-01	1.35565996170044
1998-01-01	1.33668005466461
1999-01-01	1.27404999732971
2000-01-01	1.24022996425629
2001-01-01	1.21827995777130
2002-01-01	1.18956995010376
2003-01-01	1.14582002162933
2004-01-01	1.11680996417999
2005-01-01	1.10978996753693
2006-01-01	1.10019004344940
2009-01-01	1.07518994808197
2010-01-01	1.07283997535706
2015-01-01	1.02135002613068
2016-01-01	1.00627005100250