Quarter Percent 2011-06-30 -26.3 2011-09-30 9.2 2011-12-31 -42.3 2012-03-31 -2.9 2012-06-30 60 2012-09-30 45.7 2012-12-31 -18.7 2013-03-31 9.7 2013-06-30 13.3 2013-09-30 8.8 2013-12-31 -33.5 2014-03-31 -30.8 2014-06-30 37.8 2014-09-30 -34.6 2014-12-31 9 2015-03-31 8.1 2015-06-30 -13.9 2015-09-30 -26.7 2015-12-31 10.2 2016-03-31 -15 2016-06-30 53.8 2016-09-30 -16 2016-12-31 13.1 2017-03-31 103.3 2017-06-30 -21.2 2017-09-30 60.4 2017-12-31 -29.8 2018-03-31 -26 2018-06-30 47.7 2018-09-30 25.2 2018-12-31 -5.8 2019-03-31 -37.9 2019-06-30 1.3 2019-09-30 39.5 2019-12-31 10.1 2020-03-31 44.6 2020-06-30 27.7 2020-09-30 12.8 2020-12-31 -42 2021-03-31 10.4 2021-06-30 23.6 2021-09-30 24.6 2021-12-31 11.7 2022-03-31 -14.2 2022-06-30 22.6 2022-09-30 -29.3 2022-12-31 34.1 2023-03-31 -11.9 2023-06-30 -14.7 2023-09-30 -9.6 2023-12-31 -19.7