| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 46.6 | -3.72 | -7.4% | Jun 30, 2024 |
| Q1 2024 | 48 | -3.17 | -6.2% | Mar 31, 2024 |
| Q4 2023 | 48.8 | -2.99 | -5.77% | Dec 31, 2023 |
| Q3 2023 | 49.8 | -2.47 | -4.73% | Sep 30, 2023 |
| Q2 2023 | 50.3 | -3.27 | -6.11% | Jun 30, 2023 |
| Q1 2023 | 51.2 | -2.87 | -5.31% | Mar 31, 2023 |
| Q4 2022 | 51.8 | -2.84 | -5.2% | Dec 31, 2022 |
| Q3 2022 | 52.3 | -2.95 | -5.34% | Sep 30, 2022 |
| Q2 2022 | 53.6 | -1.74 | -3.15% | Jun 30, 2022 |
| Q1 2022 | 54 | -2.1 | -3.74% | Mar 31, 2022 |
| Q4 2021 | 54.7 | -0.3 | -0.55% | Dec 31, 2021 |
| Q3 2021 | 55.2 | +0.43 | +0.79% | Sep 30, 2021 |
| Q2 2021 | 55.3 | +0.71 | +1.3% | Jun 30, 2021 |
| Q1 2021 | 56.1 | +2.21 | +4.1% | Mar 31, 2021 |
| Q4 2020 | 55 | +0.8 | +1.48% | Dec 31, 2020 |
| Q3 2020 | 54.8 | +0.82 | +1.52% | Sep 30, 2020 |
| Q2 2020 | 54.6 | +0.9 | +1.68% | Jun 30, 2020 |
| Q1 2020 | 53.9 | +0.08 | +0.15% | Mar 31, 2020 |
| Q4 2019 | 54.2 | -0.44 | -0.81% | Dec 31, 2019 |
| Q3 2019 | 54 | 0 | 0% | Sep 30, 2019 |
| Q2 2019 | 53.7 | -0.26 | -0.48% | Jun 30, 2019 |
| Q1 2019 | 53.8 | +0.01 | +0.02% | Mar 31, 2019 |
| Q4 2018 | 54.6 | +0.11 | +0.2% | Dec 31, 2018 |
| Q3 2018 | 54 | -1.67 | -3% | Sep 30, 2018 |
| Q2 2018 | 54 | -1.85 | -3.32% | Jun 30, 2018 |
| Q1 2018 | 53.8 | -2.17 | -3.88% | Mar 31, 2018 |
| Q4 2017 | 54.5 | -0.9 | -1.63% | Dec 31, 2017 |
| Q3 2017 | 55.6 | -0.09 | -0.16% | Sep 30, 2017 |
| Q2 2017 | 55.8 | -0.03 | -0.05% | Jun 30, 2017 |
| Q1 2017 | 56 | +0.21 | +0.38% | Mar 31, 2017 |
| Q4 2016 | 55.4 | -0.3 | -0.54% | Dec 31, 2016 |
| Q3 2016 | 55.7 | +0.07 | +0.13% | Sep 30, 2016 |
| Q2 2016 | 55.8 | +0.3 | +0.54% | Jun 30, 2016 |
| Q1 2016 | 55.8 | -0.12 | -0.22% | Mar 31, 2016 |
| Q4 2015 | 55.7 | -1.39 | -2.44% | Dec 31, 2015 |
| Q3 2015 | 55.7 | -2.45 | -4.22% | Sep 30, 2015 |
| Q2 2015 | 55.5 | -3.68 | -6.22% | Jun 30, 2015 |
| Q1 2015 | 55.9 | -4.08 | -6.8% | Mar 31, 2015 |
| Q4 2014 | 57.1 | -2.02 | -3.42% | Dec 31, 2014 |
| Q3 2014 | 58.1 | -0.03 | -0.05% | Sep 30, 2014 |
| Q2 2014 | 59.2 | +1.8 | +3.14% | Jun 30, 2014 |
| Q1 2014 | 60 | +3.05 | +5.36% | Mar 31, 2014 |
| Q4 2013 | 59.1 | +2.7 | +4.79% | Dec 31, 2013 |
| Q3 2013 | 58.1 | +1.42 | +2.5% | Sep 30, 2013 |
| Q2 2013 | 57.4 | +0.88 | +1.56% | Jun 30, 2013 |
| Q1 2013 | 56.9 | +0.54 | +0.96% | Mar 31, 2013 |
| Q4 2012 | 56.4 | -0.21 | -0.37% | Dec 31, 2012 |
| Q3 2012 | 56.7 | +0.16 | +0.28% | Sep 30, 2012 |
| Q2 2012 | 56.5 | -0.7 | -1.22% | Jun 30, 2012 |
| Q1 2012 | 56.4 | -0.97 | -1.69% | Mar 31, 2012 |
| Q4 2011 | 56.6 | -0.93 | -1.62% | Dec 31, 2011 |
| Q3 2011 | 56.6 | Sep 30, 2011 | ||
| Q2 2011 | 57.2 | Jun 30, 2011 | ||
| Q1 2011 | 57.4 | Mar 31, 2011 | ||
| Q4 2010 | 57.5 | Dec 31, 2010 |