| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q1 2024 | 25.7 | -1.89 | -6.84% | Mar 31, 2024 |
| Q4 2023 | 25.9 | -2.14 | -7.64% | Dec 31, 2023 |
| Q3 2023 | 26.3 | -2.05 | -7.24% | Sep 30, 2023 |
| Q2 2023 | 26.6 | -3.28 | -11% | Jun 30, 2023 |
| Q1 2023 | 27.6 | -2.77 | -9.11% | Mar 31, 2023 |
| Q4 2022 | 28 | -1.58 | -5.34% | Dec 31, 2022 |
| Q3 2022 | 28.3 | -0.65 | -2.24% | Sep 30, 2022 |
| Q2 2022 | 29.9 | +3.53 | +13.4% | Jun 30, 2022 |
| Q1 2022 | 30.4 | +3.7 | +13.9% | Mar 31, 2022 |
| Q4 2021 | 29.6 | +1.31 | +4.63% | Dec 31, 2021 |
| Q3 2021 | 29 | -0.83 | -2.78% | Sep 30, 2021 |
| Q2 2021 | 26.3 | -6.67 | -20.2% | Jun 30, 2021 |
| Q1 2021 | 26.7 | -5.15 | -16.2% | Mar 31, 2021 |
| Q4 2020 | 28.3 | -1.58 | -5.29% | Dec 31, 2020 |
| Q3 2020 | 29.8 | +1.08 | +3.76% | Sep 30, 2020 |
| Q2 2020 | 33 | +5.05 | +18.1% | Jun 30, 2020 |
| Q1 2020 | 31.8 | +4.97 | +18.5% | Mar 31, 2020 |
| Q4 2019 | 29.9 | +2.06 | +7.41% | Dec 31, 2019 |
| Q3 2019 | 28.7 | +0.86 | +3.09% | Sep 30, 2019 |
| Q2 2019 | 28 | -0.62 | -2.17% | Jun 30, 2019 |
| Q1 2019 | 26.9 | -2.88 | -9.68% | Mar 31, 2019 |
| Q4 2018 | 27.8 | -1.24 | -4.27% | Dec 31, 2018 |
| Q3 2018 | 27.9 | -0.45 | -1.59% | Sep 30, 2018 |
| Q2 2018 | 28.6 | -0.08 | -0.28% | Jun 30, 2018 |
| Q1 2018 | 29.8 | +1.13 | +3.95% | Mar 31, 2018 |
| Q4 2017 | 29.1 | -0.47 | -1.59% | Dec 31, 2017 |
| Q3 2017 | 28.3 | -3.43 | -10.8% | Sep 30, 2017 |
| Q2 2017 | 28.7 | -3.02 | -9.53% | Jun 30, 2017 |
| Q1 2017 | 28.6 | -3.17 | -9.97% | Mar 31, 2017 |
| Q4 2016 | 29.5 | -1.55 | -4.99% | Dec 31, 2016 |
| Q3 2016 | 31.8 | +0.77 | +2.49% | Sep 30, 2016 |
| Q2 2016 | 31.7 | +1.5 | +4.97% | Jun 30, 2016 |
| Q1 2016 | 31.8 | +2.36 | +8.02% | Mar 31, 2016 |
| Q4 2015 | 31.1 | +2.46 | +8.6% | Dec 31, 2015 |
| Q3 2015 | 31 | +3.36 | +12.2% | Sep 30, 2015 |
| Q2 2015 | 30.2 | +2.56 | +9.27% | Jun 30, 2015 |
| Q1 2015 | 29.4 | +1.54 | +5.52% | Mar 31, 2015 |
| Q4 2014 | 28.6 | -0.66 | -2.25% | Dec 31, 2014 |
| Q3 2014 | 27.6 | -3.12 | -10.1% | Sep 30, 2014 |
| Q2 2014 | 27.6 | -3.65 | -11.7% | Jun 30, 2014 |
| Q1 2014 | 27.9 | -3.45 | -11% | Mar 31, 2014 |
| Q4 2013 | 29.3 | -1.42 | -4.63% | Dec 31, 2013 |
| Q3 2013 | 30.8 | +0.78 | +2.6% | Sep 30, 2013 |
| Q2 2013 | 31.3 | +1.39 | +4.65% | Jun 30, 2013 |
| Q1 2013 | 31.3 | +1.23 | +4.09% | Mar 31, 2013 |
| Q4 2012 | 30.7 | +0.44 | +1.45% | Dec 31, 2012 |
| Q3 2012 | 30 | -0.47 | -1.54% | Sep 30, 2012 |
| Q2 2012 | 29.9 | -0.14 | -0.47% | Jun 30, 2012 |
| Q1 2012 | 30.1 | +0.57 | +1.93% | Mar 31, 2012 |
| Q4 2011 | 30.3 | Dec 31, 2011 | ||
| Q3 2011 | 30.4 | Sep 30, 2011 | ||
| Q2 2011 | 30 | Jun 30, 2011 | ||
| Q1 2011 | 29.5 | Mar 31, 2011 |