| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q3 2024 | 24 | -1.36 | -5.36% | Sep 30, 2024 |
| Q2 2024 | 25.5 | +0.61 | +2.45% | Jun 30, 2024 |
| Q1 2024 | 25.6 | +1.12 | +4.57% | Mar 31, 2024 |
| Q4 2023 | 25.5 | +0.85 | +3.45% | Dec 31, 2023 |
| Q3 2023 | 25.4 | +0.62 | +2.5% | Sep 30, 2023 |
| Q2 2023 | 24.9 | +0.31 | +1.26% | Jun 30, 2023 |
| Q1 2023 | 24.5 | -0.36 | -1.45% | Mar 31, 2023 |
| Q4 2022 | 24.6 | +0.16 | +0.65% | Dec 31, 2022 |
| Q3 2022 | 24.8 | +1.55 | +6.68% | Sep 30, 2022 |
| Q2 2022 | 24.6 | 0 | 0% | Jun 30, 2022 |
| Q1 2022 | 24.9 | -0.21 | -0.84% | Mar 31, 2022 |
| Q4 2021 | 24.5 | -0.78 | -3.09% | Dec 31, 2021 |
| Q3 2021 | 23.2 | -3.98 | -14.6% | Sep 30, 2021 |
| Q2 2021 | 24.6 | -2.23 | -8.32% | Jun 30, 2021 |
| Q1 2021 | 25.1 | -2.13 | -7.83% | Mar 31, 2021 |
| Q4 2020 | 25.3 | -3.44 | -12% | Dec 31, 2020 |
| Q3 2020 | 27.2 | -0.84 | -3% | Sep 30, 2020 |
| Q2 2020 | 26.8 | -1.42 | -5.03% | Jun 30, 2020 |
| Q1 2020 | 27.2 | -0.87 | -3.1% | Mar 31, 2020 |
| Q4 2019 | 28.7 | +0.47 | +1.67% | Dec 31, 2019 |
| Q3 2019 | 28 | -1.11 | -3.81% | Sep 30, 2019 |
| Q2 2019 | 28.2 | -0.37 | -1.29% | Jun 30, 2019 |
| Q1 2019 | 28.1 | -0.58 | -2.02% | Mar 31, 2019 |
| Q4 2018 | 28.2 | +0.95 | +3.48% | Dec 31, 2018 |
| Q3 2018 | 29.2 | +1.67 | +6.08% | Sep 30, 2018 |
| Q2 2018 | 28.6 | -0.37 | -1.28% | Jun 30, 2018 |
| Q1 2018 | 28.7 | -1.72 | -5.66% | Mar 31, 2018 |
| Q4 2017 | 27.3 | -4.08 | -13% | Dec 31, 2017 |
| Q3 2017 | 27.5 | -2.7 | -8.95% | Sep 30, 2017 |
| Q2 2017 | 29 | -0.16 | -0.55% | Jun 30, 2017 |
| Q1 2017 | 30.4 | +2.22 | +7.89% | Mar 31, 2017 |
| Q4 2016 | 31.4 | +3.7 | +13.4% | Dec 31, 2016 |
| Q3 2016 | 30.2 | +1.05 | +3.6% | Sep 30, 2016 |
| Q2 2016 | 29.1 | +2.1 | +7.77% | Jun 30, 2016 |
| Q1 2016 | 28.2 | +0.26 | +0.93% | Mar 31, 2016 |
| Q4 2015 | 27.7 | -0.56 | -1.99% | Dec 31, 2015 |
| Q3 2015 | 29.1 | -0.03 | -0.1% | Sep 30, 2015 |
| Q2 2015 | 27 | -6.29 | -18.9% | Jun 30, 2015 |
| Q1 2015 | 27.9 | -6.04 | -17.8% | Mar 31, 2015 |
| Q4 2014 | 28.2 | -7.96 | -22% | Dec 31, 2014 |
| Q3 2014 | 29.2 | -7.18 | -19.8% | Sep 30, 2014 |
| Q2 2014 | 33.3 | -4.37 | -11.6% | Jun 30, 2014 |
| Q1 2014 | 33.9 | -3.82 | -10.1% | Mar 31, 2014 |
| Q4 2013 | 36.2 | -2.18 | -5.69% | Dec 31, 2013 |
| Q3 2013 | 36.4 | -2.8 | -7.15% | Sep 30, 2013 |
| Q2 2013 | 37.7 | -0.13 | -0.34% | Jun 30, 2013 |
| Q1 2013 | 37.8 | -0.7 | -1.82% | Mar 31, 2013 |
| Q4 2012 | 38.3 | -0.21 | -0.55% | Dec 31, 2012 |
| Q3 2012 | 39.2 | +0.84 | +2.19% | Sep 30, 2012 |
| Q2 2012 | 37.8 | -0.1 | -0.26% | Jun 30, 2012 |
| Q1 2012 | 38.4 | +0.29 | +0.76% | Mar 31, 2012 |
| Q4 2011 | 38.6 | -0.31 | -0.8% | Dec 31, 2011 |
| Q3 2011 | 38.3 | Sep 30, 2011 | ||
| Q2 2011 | 37.9 | Jun 30, 2011 | ||
| Q1 2011 | 38.2 | Mar 31, 2011 | ||
| Q4 2010 | 38.9 | Dec 31, 2010 |