Year | Value | 2020 | 1.01 | 2019 | 0.9 | 2018 | 0.9 | 2017 | 0.89 | 2016 | 0.89 | 2015 | 0.84 | 2014 | 0.89 | 2013 | 0.87 | 2012 | 0.84 | 2011 | 0.83 | 2010 | 0.84 | 2009 | 0.82 | 2008 | 0.82 | 2007 | 0.8 | 2006 | 0.8 | 2005 | 0.81 | 2004 | 0.78 | 2003 | 0.81 | 2002 | 0.83 | 2001 | 0.77 | 2000 | 0.78 | 1996 | 1.3400000334 | 1994 | 0.6008999944 | 1993 | 1.2999999523 | 1990 | 0.9322000146 | 1989 | 1.3200999498367 | 1975 | 1.6829999685288 |
|