Quarter Sterling (millions) 2004-03-31 67.1 2004-06-30 67.7 2004-09-30 67.9 2004-12-31 68.2 2005-03-31 68.1 2005-06-30 69.5 2005-09-30 70.4 2005-12-31 70.4 2006-03-31 70.2 2006-06-30 70.3 2006-09-30 70.1 2006-12-31 69.8 2007-03-31 70.1 2007-06-30 69.7 2007-09-30 69.4 2007-12-31 68.9 2008-03-31 67.8 2008-06-30 67 2008-09-30 66.1 2008-12-31 65.6 2009-03-31 64.4 2009-06-30 63.3 2009-09-30 62.5 2009-12-31 61.7 2010-03-31 60.9 2010-06-30 59.9 2010-09-30 59 2010-12-31 58.1 2011-03-31 63.2 2011-06-30 63 2011-09-30 63.4 2011-12-31 63.6 2012-03-31 63.8 2012-06-30 63.9 2012-09-30 64.6 2012-12-31 63.8 2013-03-31 64.2 2013-06-30 64.7 2013-09-30 65.2 2013-12-31 65.7 2014-03-31 66.4 2014-06-30 66.4 2014-09-30 66.7 2014-12-31 67.1 2015-03-31 67.6 2015-06-30 67.7 2015-09-30 68 2015-12-31 68.2 2016-03-31 75.5 2016-06-30 76.7 2016-09-30 77.9 2016-12-31 78.4 2017-03-31 78.7 2017-06-30 79.2 2017-09-30 79.8 2017-12-31 81 2018-03-31 81.4 2018-06-30 82.2 2018-09-30 83.2 2018-12-31 83.5 2019-03-31 83.5 2019-06-30 84 2019-09-30 84.4 2019-12-31 84.6 2020-03-31 85.2 2020-06-30 84.7 2020-09-30 83.9 2020-12-31 83.7 2021-03-31 83.4 2021-06-30 83.4 2021-09-30 83.2 2021-12-31 83.2 2022-03-31 83.5 2022-06-30 84.1 2022-09-30 84.6 2022-12-31 84.9 2023-03-31 85.1 2023-06-30 85.3 2023-09-30 85.8 2023-12-31 85.8