Year	Ratio
1993-01-01	0.975390017032623
1995-01-01	1.048529982566830
1996-01-01	1.035480022430420
1997-01-01	1.029279947280880
1998-01-01	1.009610056877140
1999-01-01	1.006410002708440
2000-01-01	0.995060026645660
2001-01-01	0.992120027542114
2002-01-01	0.983030021190643
2003-01-01	0.979019999504089
2004-01-01	0.990180015563965
2005-01-01	0.990859985351563
2006-01-01	0.995429992675781
2007-01-01	0.995679974555969
2008-01-01	0.998139977455139
2009-01-01	0.997460007667542
2010-01-01	0.981149971485138
2011-01-01	0.975359976291656
2012-01-01	0.962459981441498
2013-01-01	0.956459999084473
2014-01-01	0.957740008831024
2015-01-01	0.957729995250702
2016-01-01	0.953980028629303