| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 39.6 | +3.42 | +9.45% | Jun 30, 2024 |
| Q1 2024 | 38.4 | +2.32 | +6.44% | Mar 31, 2024 |
| Q4 2023 | 37.8 | +1.52 | +4.19% | Dec 31, 2023 |
| Q3 2023 | 36.7 | -0.13 | -0.35% | Sep 30, 2023 |
| Q2 2023 | 36.2 | +0.52 | +1.46% | Jun 30, 2023 |
| Q1 2023 | 36 | +2.95 | +8.92% | Mar 31, 2023 |
| Q4 2022 | 36.3 | +6.01 | +19.9% | Dec 31, 2022 |
| Q3 2022 | 36.8 | +8.99 | +32.3% | Sep 30, 2022 |
| Q2 2022 | 35.7 | +7.56 | +26.9% | Jun 30, 2022 |
| Q1 2022 | 33.1 | +7.08 | +27.2% | Mar 31, 2022 |
| Q4 2021 | 30.2 | +6.78 | +28.9% | Dec 31, 2021 |
| Q3 2021 | 27.8 | +6.56 | +30.8% | Sep 30, 2021 |
| Q2 2021 | 28.1 | +8.8 | +45.6% | Jun 30, 2021 |
| Q1 2021 | 26 | +7.31 | +39.1% | Mar 31, 2021 |
| Q4 2020 | 23.5 | +2.88 | +14% | Dec 31, 2020 |
| Q3 2020 | 21.3 | +1.36 | +6.83% | Sep 30, 2020 |
| Q2 2020 | 19.3 | -0.71 | -3.55% | Jun 30, 2020 |
| Q1 2020 | 18.7 | -1.78 | -8.7% | Mar 31, 2020 |
| Q4 2019 | 20.6 | +1.79 | +9.53% | Dec 31, 2019 |
| Q3 2019 | 19.9 | -2.08 | -9.45% | Sep 30, 2019 |
| Q2 2019 | 20 | -6.21 | -23.7% | Jun 30, 2019 |
| Q1 2019 | 20.5 | -11.2 | -35.3% | Mar 31, 2019 |
| Q4 2018 | 18.8 | -19.8 | -51.3% | Dec 31, 2018 |
| Q3 2018 | 22 | -17 | -43.5% | Sep 30, 2018 |
| Q2 2018 | 26.2 | -15.4 | -37.1% | Jun 30, 2018 |
| Q1 2018 | 31.6 | -11.8 | -27.1% | Mar 31, 2018 |
| Q4 2017 | 38.6 | -5.45 | -12.4% | Dec 31, 2017 |
| Q3 2017 | 39 | -3.64 | -8.54% | Sep 30, 2017 |
| Q2 2017 | 41.7 | -0.73 | -1.72% | Jun 30, 2017 |
| Q1 2017 | 43.4 | +0.93 | +2.19% | Mar 31, 2017 |
| Q4 2016 | 44.1 | +3.28 | +8.05% | Dec 31, 2016 |
| Q3 2016 | 42.6 | +1.25 | +3.02% | Sep 30, 2016 |
| Q2 2016 | 42.4 | +4.7 | +12.5% | Jun 30, 2016 |
| Q1 2016 | 42.5 | +8.73 | +25.9% | Mar 31, 2016 |
| Q4 2015 | 40.8 | +8.82 | +27.6% | Dec 31, 2015 |
| Q3 2015 | 41.4 | +13.4 | +47.8% | Sep 30, 2015 |
| Q2 2015 | 37.7 | +8.63 | +29.7% | Jun 30, 2015 |
| Q1 2015 | 33.7 | +1.2 | +3.69% | Mar 31, 2015 |
| Q4 2014 | 32 | -4.57 | -12.5% | Dec 31, 2014 |
| Q3 2014 | 28 | -18.5 | -39.8% | Sep 30, 2014 |
| Q2 2014 | 29.1 | -22.8 | -44% | Jun 30, 2014 |
| Q1 2014 | 32.5 | -20.2 | -38.3% | Mar 31, 2014 |
| Q4 2013 | 36.5 | -9.43 | -20.5% | Dec 31, 2013 |
| Q3 2013 | 46.5 | +4.98 | +12% | Sep 30, 2013 |
| Q2 2013 | 51.9 | +13.8 | +36.1% | Jun 30, 2013 |
| Q1 2013 | 52.7 | +16.9 | +47.3% | Mar 31, 2013 |
| Q4 2012 | 46 | +6.55 | +16.6% | Dec 31, 2012 |
| Q3 2012 | 41.5 | -0.99 | -2.33% | Sep 30, 2012 |
| Q2 2012 | 38.1 | -6.97 | -15.5% | Jun 30, 2012 |
| Q1 2012 | 35.8 | -13 | -26.7% | Mar 31, 2012 |
| Q4 2011 | 39.4 | Dec 31, 2011 | ||
| Q3 2011 | 42.5 | Sep 30, 2011 | ||
| Q2 2011 | 45.1 | Jun 30, 2011 | ||
| Q1 2011 | 48.8 | Mar 31, 2011 |