| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q3 2023 | 15.3 | +4.07 | +36.1% | Sep 30, 2023 |
| Q2 2023 | 14 | +2.86 | +25.6% | Jun 30, 2023 |
| Q1 2023 | 12.7 | +1.01 | +8.63% | Mar 31, 2023 |
| Q4 2022 | 11.5 | -1.49 | -11.4% | Dec 31, 2022 |
| Q3 2022 | 11.3 | -2.86 | -20.2% | Sep 30, 2022 |
| Q2 2022 | 11.2 | -4.15 | -27.1% | Jun 30, 2022 |
| Q1 2022 | 11.7 | -5.06 | -30.2% | Mar 31, 2022 |
| Q4 2021 | 13 | -3.83 | -22.7% | Dec 31, 2021 |
| Q3 2021 | 14.1 | -2.51 | -15.1% | Sep 30, 2021 |
| Q2 2021 | 15.3 | -1.03 | -6.3% | Jun 30, 2021 |
| Q1 2021 | 16.8 | +1.04 | +6.61% | Mar 31, 2021 |
| Q4 2020 | 16.9 | +0.77 | +4.79% | Dec 31, 2020 |
| Q3 2020 | 16.6 | -0.43 | -2.52% | Sep 30, 2020 |
| Q2 2020 | 16.4 | -1.19 | -6.79% | Jun 30, 2020 |
| Q1 2020 | 15.7 | -2.19 | -12.2% | Mar 31, 2020 |
| Q4 2019 | 16.1 | -1.72 | -9.66% | Dec 31, 2019 |
| Q3 2019 | 17.1 | -0.79 | -4.42% | Sep 30, 2019 |
| Q2 2019 | 17.5 | -0.29 | -1.63% | Jun 30, 2019 |
| Q1 2019 | 17.9 | -0.06 | -0.33% | Mar 31, 2019 |
| Q4 2018 | 17.8 | -1.05 | -5.57% | Dec 31, 2018 |
| Q3 2018 | 17.9 | -1.88 | -9.53% | Sep 30, 2018 |
| Q2 2018 | 17.8 | -2.86 | -13.8% | Jun 30, 2018 |
| Q1 2018 | 18 | -3.37 | -15.8% | Mar 31, 2018 |
| Q4 2017 | 18.9 | -1.99 | -9.55% | Dec 31, 2017 |
| Q3 2017 | 19.7 | +0.42 | +2.18% | Sep 30, 2017 |
| Q2 2017 | 20.7 | +2.96 | +16.7% | Jun 30, 2017 |
| Q1 2017 | 21.3 | +5.21 | +32.3% | Mar 31, 2017 |
| Q4 2016 | 20.8 | +6.14 | +41.8% | Dec 31, 2016 |
| Q3 2016 | 19.3 | +4.68 | +32% | Sep 30, 2016 |
| Q2 2016 | 17.7 | +2.92 | +19.7% | Jun 30, 2016 |
| Q1 2016 | 16.1 | +0.41 | +2.61% | Mar 31, 2016 |
| Q4 2015 | 14.7 | -2.64 | -15.2% | Dec 31, 2015 |
| Q3 2015 | 14.6 | -3.49 | -19.3% | Sep 30, 2015 |
| Q2 2015 | 14.8 | -4.09 | -21.6% | Jun 30, 2015 |
| Q1 2015 | 15.7 | -3.69 | -19% | Mar 31, 2015 |
| Q4 2014 | 17.4 | -2.38 | -12.1% | Dec 31, 2014 |
| Q3 2014 | 18.1 | -2.17 | -10.7% | Sep 30, 2014 |
| Q2 2014 | 18.9 | -5.72 | -23.2% | Jun 30, 2014 |
| Q1 2014 | 19.4 | -9.87 | -33.7% | Mar 31, 2014 |
| Q4 2013 | 19.7 | -19.6 | -49.9% | Dec 31, 2013 |
| Q3 2013 | 20.3 | -35.3 | -63.5% | Sep 30, 2013 |
| Q2 2013 | 24.6 | -38 | -60.7% | Jun 30, 2013 |
| Q1 2013 | 29.3 | -41.4 | -58.6% | Mar 31, 2013 |
| Q4 2012 | 39.4 | Dec 31, 2012 | ||
| Q3 2012 | 55.6 | Sep 30, 2012 | ||
| Q2 2012 | 62.6 | Jun 30, 2012 | ||
| Q1 2012 | 70.7 | Mar 31, 2012 |