Year | Value | 2022 | 1.535 | 2021 | 2.385 | 2020 | 2.103 | 2019 | 1.681 | 2018 | 1.161 | 2017 | 1.874 | 2016 | 1.848 | 2015 | 1.849 | 2014 | 1.256 | 2013 | 1.316 | 2012 | 1.027 | 2011 | 0.999 | 2010 | 1.114 | 2009 | 1.737 | 2007 | 2.026 | 2004 | 2.14 | 2003 | 2.25 | 2002 | 2.12 | 2001 | 2.76 | 2000 | 2.26 | 1999 | 2.33 | 1998 | 2.29 | 1997 | 2.87 | 1996 | 1.93 |
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