Year | |
---|---|
2001 | 48.9 |
2002 | 49.3 |
2003 | 50.1 |
2004 | 50.6 |
2005 | 50.5 |
2006 | 50.0 |
2007 | 49.9 |
2008 | 49.6 |
2009 | 49.2 |
2010 | 49.0 |
2011 | 48.9 |
2012 | 49.0 |
2013 | 49.2 |
2014 | 49.4 |
2015 | 49.5 |
2016 | 49.7 |
2017 | 49.5 |
2018 | 49.2 |
2019 | 49.3 |
2020 | 49.8 |
2021 | 50.1 |