Year Average 10th percentile 90th percentile limit value Target value
2000 29.0 17.5 40.2 40
2001 28.3 17.3 39.3 40
2002 27.6 16.8 40.0 40
2003 30.0 17.9 42.3 40
2004 27.5 16.3 39.4 40
2005 27.2 15.5 40.1 40
2006 27.0 16.2 38.1 40
2007 25.9 14.6 37.7 40
2008 24.7 14.0 35.7 40
2009 24.8 14.0 36.0 40
2010 25.2 14.9 35.6 40
2011 24.3 14.1 35.3 40
2012 23.2 13.9 33.5 40
2013 22.5 13.4 32.0 40