Quarter Percent 2011-06-30 -8.8 2011-09-30 -19.4 2011-12-31 -15 2012-03-31 -50.4 2012-06-30 -50 2012-09-30 -15.5 2012-12-31 -10.1 2013-03-31 -32.9 2013-06-30 -9 2013-09-30 -5.4 2013-12-31 -12.8 2014-03-31 -32.6 2014-06-30 2.6 2014-09-30 -10.2 2014-12-31 -21.8 2015-03-31 -59.1 2015-06-30 -15.3 2015-09-30 -29.5 2015-12-31 -6.6 2016-03-31 -25.1 2016-06-30 2.5 2016-09-30 -29.3 2016-12-31 19.1 2017-03-31 -44.3 2017-06-30 -6.4 2017-09-30 -5 2017-12-31 -2.3 2018-03-31 1.7 2018-06-30 4.2 2018-09-30 19.8 2018-12-31 24.6 2019-03-31 -15.6 2019-06-30 6.9 2019-09-30 4.6 2019-12-31 21.8 2020-03-31 14 2020-06-30 -0.4 2020-09-30 -13.2 2020-12-31 -30.1 2021-03-31 -16.3 2021-06-30 -19.6 2021-09-30 -6.7 2021-12-31 -19.6 2022-03-31 5.6 2022-06-30 -23.6 2022-09-30 0.1 2022-12-31 25.7 2023-03-31 -13.6 2023-06-30 17.9 2023-09-30 -5.5 2023-12-31 14.2