Quarter Sterling (millions) 2004-03-31 3.9 2004-06-30 3.1 2004-09-30 3.2 2004-12-31 5.7 2005-03-31 3.2 2005-06-30 11.4 2005-09-30 3 2005-12-31 5.3 2006-03-31 2.6 2006-06-30 3 2006-09-30 2.2 2006-12-31 3.7 2007-03-31 2.8 2007-06-30 3.8 2007-09-30 4.8 2007-12-31 3.7 2008-03-31 3.9 2008-06-30 3.2 2008-09-30 4.2 2008-12-31 4.7 2009-03-31 4.5 2009-06-30 4.8 2009-09-30 3.3 2009-12-31 3.4 2010-03-31 2.9 2010-06-30 2.4 2010-09-30 2.7 2010-12-31 2.8 2011-03-31 2.7 2011-06-30 2.2 2011-09-30 2.2 2011-12-31 3 2012-03-31 1.7 2012-06-30 1.7 2012-09-30 1.9 2012-12-31 2.2 2013-03-31 2 2013-06-30 3.8 2013-09-30 1.9 2013-12-31 2.8 2014-03-31 1.9 2014-06-30 1.6 2014-09-30 3 2014-12-31 7.1 2015-03-31 2.9 2015-06-30 3.7 2015-09-30 2.5 2015-12-31 4.8