Year	Ratio
1970-01-01	1.036779999732970
1971-01-01	1.005990028381350
1972-01-01	1.000309944152830
1973-01-01	1.010010004043580
1974-01-01	0.994279980659485
1975-01-01	1.002609968185420
1976-01-01	1.005959987640380
1977-01-01	1.018640041351320
1978-01-01	1.014060020446780
1979-01-01	1.004240036010740
1980-01-01	1.001629948616030
1981-01-01	0.992829978466034
1982-01-01	1.004739999771120
1983-01-01	0.995429992675781
1984-01-01	0.999300003051758
1986-01-01	1.002310037612920
1987-01-01	1.008159995079040
1988-01-01	1.020210027694700
1991-01-01	1.081910014152530
1999-01-01	1.012689948081970
2000-01-01	1.011350035667420
2001-01-01	0.996280014514923
2002-01-01	0.993160009384155
2003-01-01	0.997709989547729
2004-01-01	0.998170018196106
2005-01-01	1.001489996910100
2006-01-01	1.005259990692140
2007-01-01	0.999639987945557
2008-01-01	1.010030031204220
2010-01-01	1.010089993476870
2011-01-01	1.020519971847530
2012-01-01	1.003260016441350
2013-01-01	1.006350040435790
2014-01-01	1.003819942474370
2015-01-01	0.999920010566711