| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 42.9 | +0.97 | +2.32% | Jun 30, 2024 |
| Q1 2024 | 42.1 | +0.42 | +1.01% | Mar 31, 2024 |
| Q4 2023 | 42.3 | +1.25 | +3.05% | Dec 31, 2023 |
| Q3 2023 | 42.4 | +2.08 | +5.17% | Sep 30, 2023 |
| Q2 2023 | 41.9 | +1.41 | +3.48% | Jun 30, 2023 |
| Q1 2023 | 41.6 | +0.15 | +0.36% | Mar 31, 2023 |
| Q4 2022 | 41 | -1.77 | -4.14% | Dec 31, 2022 |
| Q3 2022 | 40.3 | -3.96 | -8.95% | Sep 30, 2022 |
| Q2 2022 | 40.5 | -4.09 | -9.18% | Jun 30, 2022 |
| Q1 2022 | 41.5 | -2.44 | -5.56% | Mar 31, 2022 |
| Q4 2021 | 42.8 | -0.02 | -0.05% | Dec 31, 2021 |
| Q3 2021 | 44.2 | +2.28 | +5.44% | Sep 30, 2021 |
| Q2 2021 | 44.6 | +2.45 | +5.82% | Jun 30, 2021 |
| Q1 2021 | 43.9 | +1.63 | +3.86% | Mar 31, 2021 |
| Q4 2020 | 42.8 | -0.86 | -1.97% | Dec 31, 2020 |
| Q3 2020 | 42 | -2.42 | -5.45% | Sep 30, 2020 |
| Q2 2020 | 42.1 | -1.96 | -4.45% | Jun 30, 2020 |
| Q1 2020 | 42.3 | -1.52 | -3.47% | Mar 31, 2020 |
| Q4 2019 | 43.7 | -0.16 | -0.37% | Dec 31, 2019 |
| Q3 2019 | 44.4 | +0.52 | +1.19% | Sep 30, 2019 |
| Q2 2019 | 44.1 | -0.23 | -0.52% | Jun 30, 2019 |
| Q1 2019 | 43.8 | -0.68 | -1.53% | Mar 31, 2019 |
| Q4 2018 | 43.8 | -0.3 | -0.68% | Dec 31, 2018 |
| Q3 2018 | 43.9 | +0.56 | +1.29% | Sep 30, 2018 |
| Q2 2018 | 44.3 | +1.91 | +4.51% | Jun 30, 2018 |
| Q1 2018 | 44.5 | +2.31 | +5.48% | Mar 31, 2018 |
| Q4 2017 | 44.1 | +1.74 | +4.11% | Dec 31, 2017 |
| Q3 2017 | 43.3 | -0.38 | -0.87% | Sep 30, 2017 |
| Q2 2017 | 42.4 | -2.2 | -4.93% | Jun 30, 2017 |
| Q1 2017 | 42.2 | -2.62 | -5.85% | Mar 31, 2017 |
| Q4 2016 | 42.4 | -2.18 | -4.89% | Dec 31, 2016 |
| Q3 2016 | 43.7 | -0.68 | -1.53% | Sep 30, 2016 |
| Q2 2016 | 44.6 | -0.44 | -0.98% | Jun 30, 2016 |
| Q1 2016 | 44.8 | -1.55 | -3.35% | Mar 31, 2016 |
| Q4 2015 | 44.6 | -2.19 | -4.69% | Dec 31, 2015 |
| Q3 2015 | 44.4 | -3.46 | -7.24% | Sep 30, 2015 |
| Q2 2015 | 45 | -3 | -6.25% | Jun 30, 2015 |
| Q1 2015 | 46.3 | -1.62 | -3.38% | Mar 31, 2015 |
| Q4 2014 | 46.8 | -2.73 | -5.52% | Dec 31, 2014 |
| Q3 2014 | 47.8 | -1.4 | -2.85% | Sep 30, 2014 |
| Q2 2014 | 48 | -1.05 | -2.14% | Jun 30, 2014 |
| Q1 2014 | 48 | -1.61 | -3.25% | Mar 31, 2014 |
| Q4 2013 | 49.5 | +0.42 | +0.86% | Dec 31, 2013 |
| Q3 2013 | 49.2 | +0.46 | +0.94% | Sep 30, 2013 |
| Q2 2013 | 49.1 | +0.58 | +1.2% | Jun 30, 2013 |
| Q1 2013 | 49.6 | +1.16 | +2.4% | Mar 31, 2013 |
| Q4 2012 | 49.1 | -0.1 | -0.2% | Dec 31, 2012 |
| Q3 2012 | 48.7 | 0 | 0% | Sep 30, 2012 |
| Q2 2012 | 48.5 | -1.63 | -3.25% | Jun 30, 2012 |
| Q1 2012 | 48.4 | -3.15 | -6.11% | Mar 31, 2012 |
| Q4 2011 | 49.2 | -3.97 | -7.47% | Dec 31, 2011 |
| Q3 2011 | 48.8 | Sep 30, 2011 | ||
| Q2 2011 | 50.1 | Jun 30, 2011 | ||
| Q1 2011 | 51.6 | Mar 31, 2011 | ||
| Q4 2010 | 53.1 | Dec 31, 2010 |