Quarter Sterling (millions) 2004-03-31 89.4 2004-06-30 93.1 2004-09-30 91.8 2004-12-31 87.1 2005-03-31 93.6 2005-06-30 84.6 2005-09-30 94.1 2005-12-31 91.6 2006-03-31 94.7 2006-06-30 92.5 2006-09-30 95.3 2006-12-31 92.8 2007-03-31 90.9 2007-06-30 90.9 2007-09-30 92.1 2007-12-31 93.9 2008-03-31 92.9 2008-06-30 94.2 2008-09-30 92.9 2008-12-31 90 2009-03-31 88.4 2009-06-30 87.6 2009-09-30 91.3 2009-12-31 91 2010-03-31 91.1 2010-06-30 91.6 2010-09-30 91.5 2010-12-31 92.3 2011-03-31 92.8 2011-06-30 92.5 2011-09-30 94.4 2011-12-31 92.1 2012-03-31 93.5 2012-06-30 94.3 2012-09-30 94.9 2012-12-31 92.6 2013-03-31 91.2 2013-06-30 89.9 2013-09-30 92.4 2013-12-31 89.6 2014-03-31 90.1 2014-06-30 89.7 2014-09-30 86.8 2014-12-31 82.6 2015-03-31 87.2 2015-06-30 86.1 2015-09-30 88.8 2015-12-31 84.5