Year Average 10th percentile 90th percentile limit value Target value
2000 27.5 16.2 39.8 40
2001 26.8 16.0 39.3 40
2002 26.1 15.5 38.5 40
2003 28.3 16.9 41.6 40
2004 26.0 14.9 38.9 40
2005 25.8 14.9 39.0 40
2006 25.8 14.7 38.2 40
2007 24.7 14.0 37.2 40
2008 23.7 13.3 35.3 40
2009 23.8 13.5 35.4 40
2010 24.0 14.1 34.8 40
2011 23.0 13.1 34.3 40
2012 21.9 12.4 32.5 40
2013 21.2 11.7 31.3 40
2014 20.0 11.3 29.7 40