Quarter Percent 2011-06-30 14.9 2011-09-30 30.7 2011-12-31 -56.3 2012-03-31 13.6 2012-06-30 -66.8 2012-09-30 18.5 2012-12-31 17.6 2013-03-31 -11.8 2013-06-30 -9.9 2013-09-30 13.6 2013-12-31 15.7 2014-03-31 -8.8 2014-06-30 -1.4 2014-09-30 18.9 2014-12-31 18.1 2015-03-31 -45.5 2015-06-30 -19.4 2015-09-30 175.2 2015-12-31 174.5 2016-03-31 -36 2016-06-30 -61 2016-09-30 -52.5 2016-12-31 -44.6 2017-03-31 -19.6 2017-06-30 14.8 2017-09-30 -36 2017-12-31 8.3 2018-03-31 22.8 2018-06-30 158.4 2018-09-30 5.4 2018-12-31 -12.1 2019-03-31 -91.4 2019-06-30 190.4 2019-09-30 -22.9 2019-12-31 50.7 2020-03-31 25.7 2020-06-30 46.5 2020-09-30 -31.2 2020-12-31 -40.4 2021-03-31 -2.6 2021-06-30 -1.7 2021-09-30 24 2021-12-31 -39.5 2022-03-31 206.2 2022-06-30 -7.1 2022-09-30 112.7 2022-12-31 75.6 2023-03-31 20 2023-06-30 16.6 2023-09-30 -10.9 2023-12-31 -23.2