| Period | Value | YoY Chg | Change % | Start Date | End Date |
|---|---|---|---|---|---|
| Q1 2024 | 8.84 | -3.66 | -29.3% | Mar 31, 2024 | |
| Q4 2023 | 8.96 | -3.99 | -30.8% | Dec 31, 2023 | |
| Q3 2023 | 10.3 | -4.28 | -29.4% | Sep 30, 2023 | |
| Q2 2023 | 12.4 | -1.46 | -10.5% | Jun 30, 2023 | |
| Q1 2023 | 12.5 | -1.71 | -12% | Mar 31, 2023 | |
| Q4 2022 | 12.9 | -0.79 | -5.75% | Dec 31, 2022 | |
| Q3 2022 | 14.6 | +1.62 | +12.5% | Sep 30, 2022 | |
| Q2 2022 | 13.9 | +2.04 | +17.3% | Jun 30, 2022 | |
| Q1 2022 | 14.2 | +1.5 | +11.8% | Mar 31, 2022 | |
| Q4 2021 | 13.7 | +0.25 | +1.85% | Dec 31, 2021 | |
| Q3 2021 | 12.9 | -0.94 | -6.77% | Sep 30, 2021 | |
| Q2 2021 | 11.8 | -4.41 | -27.2% | Jun 30, 2021 | |
| Q1 2021 | 12.7 | -3.49 | -21.5% | Mar 31, 2021 | |
| Q4 2020 | 13.5 | -2.93 | -17.9% | Dec 31, 2020 | |
| Q3 2020 | 13.9 | -2.99 | -17.7% | Sep 30, 2020 | |
| Q2 2020 | 16.2 | -1.09 | -6.3% | Jun 30, 2020 | |
| Q1 2020 | 16.2 | -0.56 | -3.34% | Mar 31, 2020 | |
| Q4 2019 | 16.4 | +0.27 | +1.67% | Dec 31, 2019 | |
| Q3 2019 | 16.9 | +1.43 | +9.26% | Sep 30, 2019 | |
| Q2 2019 | 17.3 | +1.39 | +8.74% | Jun 30, 2019 | |
| Q1 2019 | 16.8 | +0.99 | +6.28% | Mar 31, 2019 | |
| Q4 2018 | 16.1 | -0.53 | -3.18% | Dec 31, 2018 | |
| Q3 2018 | 15.4 | -2.12 | -12.1% | Sep 30, 2018 | |
| Q2 2018 | 15.9 | -1.38 | -7.98% | Jun 30, 2018 | |
| Q1 2018 | 15.8 | -2.35 | -13% | Mar 31, 2018 | |
| Q4 2017 | 16.7 | -1.16 | -6.5% | Dec 31, 2017 | |
| Q3 2017 | 17.6 | +0.27 | +1.56% | Sep 30, 2017 | |
| Q2 2017 | 17.3 | -0.63 | -3.52% | Jun 30, 2017 | |
| Q1 2017 | 18.1 | +0.19 | +1.06% | Mar 31, 2017 | |
| Q4 2016 | 17.8 | +0.47 | +2.71% | Dec 31, 2016 | |
| Q3 2016 | 17.3 | -0.86 | -4.74% | Sep 30, 2016 | |
| Q2 2016 | 17.9 | +0.04 | +0.22% | Jun 30, 2016 | |
| Q1 2016 | 17.9 | +0.35 | +1.99% | Mar 31, 2016 | |
| Q4 2015 | 17.4 | -0.5 | -2.8% | Dec 31, 2015 | |
| Q3 2015 | 18.1 | +0.98 | +5.71% | Sep 30, 2015 | |
| Q2 2015 | 17.9 | +0.65 | +3.77% | Jun 30, 2015 | |
| Q1 2015 | 17.6 | +0.83 | +4.95% | Mar 31, 2015 | |
| Q4 2014 | 17.9 | +1.39 | +8.44% | Dec 31, 2014 | |
| Q3 2014 | 17.2 | +0.84 | +5.15% | Sep 30, 2014 | |
| Q2 2014 | 17.2 | +0.81 | +4.93% | Jun 30, 2014 | |
| Q1 2014 | 16.8 | -0.35 | -2.05% | Mar 31, 2014 | |
| Q4 2013 | 16.5 | -1.58 | -8.75% | Dec 31, 2013 | |
| Q3 2013 | 16.3 | -2.6 | -13.7% | Sep 30, 2013 | |
| Q2 2013 | 16.4 | -3.54 | -17.7% | Jun 30, 2013 | |
| Q1 2013 | 17.1 | -3.68 | -17.7% | Mar 31, 2013 | |
| Q4 2012 | 18.1 | -3.8 | -17.4% | Dec 31, 2012 | |
| Q3 2012 | 18.9 | -3.29 | -14.8% | Sep 30, 2012 | |
| Q2 2012 | 20 | -2.35 | -10.5% | Jun 30, 2012 | |
| Q1 2012 | 20.8 | -0.95 | -4.37% | Mar 31, 2012 | |
| Q4 2011 | 21.9 | +2.28 | +11.6% | Dec 31, 2011 | |
| Q3 2011 | 22.2 | Sep 30, 2011 | |||
| Q2 2011 | 22.3 | Jun 30, 2011 | |||
| Q1 2011 | 21.7 | Mar 31, 2011 | |||
| Q4 2010 | 19.6 | Dec 31, 2010 |