Year | Value | 2021 | 0.9 | 2020 | 1.4 | 2019 | 1.1 | 2018 | 1.2 | 2017 | 1.1 | 2016 | 1.7 | 2015 | 1.5 | 2014 | 1.5 | 2013 | 1.7 | 2012 | 1.5 | 2011 | 1.6 | 2010 | 1.1 | 2009 | 1.1 | 2008 | 0.9 | 2007 | 0.7 | 2006 | 1.1 | 2005 | 1.1 | 2004 | 1.3 | 2003 | 1.2 | 2000 | 1.1 | 1999 | 1 | 1998 | 1.2 | 1997 | 1.5 | 1996 | 1.7 | 1995 | 2 | 1994 | 2 | 1993 | 2 | 1990 | 0.7 | 1985 | 1.2 | 1980 | 1.7 |
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