Year	Ratio
1994-01-01	1.27918994426727
1995-01-01	1.28801000118256
1996-01-01	1.27012002468109
1999-01-01	1.17165005207062
2000-01-01	1.18884003162384
2006-01-01	1.38800001144409
2010-01-01	1.26986002922058
2011-01-01	1.26127004623413
2012-01-01	1.27292001247406
2013-01-01	1.26824998855591
2014-01-01	1.26321005821228
2015-01-01	1.27759003639221
2016-01-01	1.23732995986938
2017-01-01	1.26406002044678