| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 21.6 | +3.43 | +18.9% | Jun 30, 2024 |
| Q1 2024 | 20.9 | +3.02 | +16.9% | Mar 31, 2024 |
| Q4 2023 | 20.3 | +2.6 | +14.7% | Dec 31, 2023 |
| Q3 2023 | 19.1 | +0.72 | +3.91% | Sep 30, 2023 |
| Q2 2023 | 18.2 | -0.55 | -2.94% | Jun 30, 2023 |
| Q1 2023 | 17.9 | -1 | -5.3% | Mar 31, 2023 |
| Q4 2022 | 17.7 | -1.3 | -6.83% | Dec 31, 2022 |
| Q3 2022 | 18.4 | -0.6 | -3.16% | Sep 30, 2022 |
| Q2 2022 | 18.7 | -1.43 | -7.1% | Jun 30, 2022 |
| Q1 2022 | 18.9 | -2.39 | -11.2% | Mar 31, 2022 |
| Q4 2021 | 19 | -2.99 | -13.6% | Dec 31, 2021 |
| Q3 2021 | 19 | -4.04 | -17.5% | Sep 30, 2021 |
| Q2 2021 | 20.1 | -3.17 | -13.6% | Jun 30, 2021 |
| Q1 2021 | 21.3 | -2.64 | -11% | Mar 31, 2021 |
| Q4 2020 | 22 | -1.6 | -6.77% | Dec 31, 2020 |
| Q3 2020 | 23 | +0.62 | +2.77% | Sep 30, 2020 |
| Q2 2020 | 23.3 | +2.8 | +13.6% | Jun 30, 2020 |
| Q1 2020 | 23.9 | +5.8 | +32% | Mar 31, 2020 |
| Q4 2019 | 23.6 | +6.88 | +41.1% | Dec 31, 2019 |
| Q3 2019 | 22.4 | +5.57 | +33.1% | Sep 30, 2019 |
| Q2 2019 | 20.5 | +3.64 | +21.6% | Jun 30, 2019 |
| Q1 2019 | 18.1 | +1.1 | +6.46% | Mar 31, 2019 |
| Q4 2018 | 16.7 | -0.43 | -2.5% | Dec 31, 2018 |
| Q3 2018 | 16.9 | +0.5 | +3.06% | Sep 30, 2018 |
| Q2 2018 | 16.9 | +0.76 | +4.72% | Jun 30, 2018 |
| Q1 2018 | 17 | +0.86 | +5.32% | Mar 31, 2018 |
| Q4 2017 | 17.2 | +0.29 | +1.72% | Dec 31, 2017 |
| Q3 2017 | 16.4 | -2.03 | -11% | Sep 30, 2017 |
| Q2 2017 | 16.1 | -4.21 | -20.7% | Jun 30, 2017 |
| Q1 2017 | 16.2 | -6.22 | -27.8% | Mar 31, 2017 |
| Q4 2016 | 16.9 | -7.6 | -31% | Dec 31, 2016 |
| Q3 2016 | 18.4 | -8.23 | -30.9% | Sep 30, 2016 |
| Q2 2016 | 20.3 | -7.64 | -27.3% | Jun 30, 2016 |
| Q1 2016 | 22.4 | -6.87 | -23.5% | Mar 31, 2016 |
| Q4 2015 | 24.5 | -3.86 | -13.6% | Dec 31, 2015 |
| Q3 2015 | 26.6 | -1.15 | -4.14% | Sep 30, 2015 |
| Q2 2015 | 28 | Jun 30, 2015 | ||
| Q1 2015 | 29.3 | Mar 31, 2015 | ||
| Q4 2014 | 28.3 | Dec 31, 2014 | ||
| Q3 2014 | 27.8 | Sep 30, 2014 |