| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q4 2022 | 3.37 | -3.15 | -48.3% | Dec 31, 2022 |
| Q3 2022 | 4.2 | -2.53 | -37.6% | Sep 30, 2022 |
| Q2 2022 | 4.89 | -1.93 | -28.3% | Jun 30, 2022 |
| Q1 2022 | 5.56 | -1.37 | -19.8% | Mar 31, 2022 |
| Q4 2021 | 6.52 | +0.13 | +2.03% | Dec 31, 2021 |
| Q3 2021 | 6.72 | +0.65 | +10.7% | Sep 30, 2021 |
| Q2 2021 | 6.82 | +1.31 | +23.8% | Jun 30, 2021 |
| Q1 2021 | 6.93 | +1.67 | +31.7% | Mar 31, 2021 |
| Q4 2020 | 6.39 | +0.16 | +2.57% | Dec 31, 2020 |
| Q3 2020 | 6.08 | -1.07 | -15% | Sep 30, 2020 |
| Q2 2020 | 5.5 | -1.88 | -25.5% | Jun 30, 2020 |
| Q1 2020 | 5.27 | -1.54 | -22.6% | Mar 31, 2020 |
| Q4 2019 | 6.23 | +0.15 | +2.47% | Dec 31, 2019 |
| Q3 2019 | 7.14 | +1.99 | +38.6% | Sep 30, 2019 |
| Q2 2019 | 7.39 | +2.05 | +38.5% | Jun 30, 2019 |
| Q1 2019 | 6.81 | +0.34 | +5.26% | Mar 31, 2019 |
| Q4 2018 | 6.08 | -1.1 | -15.3% | Dec 31, 2018 |
| Q3 2018 | 5.16 | -3.85 | -42.7% | Sep 30, 2018 |
| Q2 2018 | 5.33 | -4.03 | -43% | Jun 30, 2018 |
| Q1 2018 | 6.47 | -3.43 | -34.7% | Mar 31, 2018 |
| Q4 2017 | 7.18 | -4.32 | -37.5% | Dec 31, 2017 |
| Q3 2017 | 9.01 | -2.97 | -24.8% | Sep 30, 2017 |
| Q2 2017 | 9.37 | -2.39 | -20.3% | Jun 30, 2017 |
| Q1 2017 | 9.89 | -2.87 | -22.5% | Mar 31, 2017 |
| Q4 2016 | 11.5 | +0.83 | +7.78% | Dec 31, 2016 |
| Q3 2016 | 12 | +1.25 | +11.7% | Sep 30, 2016 |
| Q2 2016 | 11.8 | +0.8 | +7.3% | Jun 30, 2016 |
| Q1 2016 | 12.8 | +5.37 | +72.7% | Mar 31, 2016 |
| Q4 2015 | 10.7 | +4.01 | +60.2% | Dec 31, 2015 |
| Q3 2015 | 10.7 | +7.76 | +262% | Sep 30, 2015 |
| Q2 2015 | 11 | +8.23 | +303% | Jun 30, 2015 |
| Q1 2015 | 7.39 | +3.7 | +100% | Mar 31, 2015 |
| Q4 2014 | 6.66 | +0.22 | +3.42% | Dec 31, 2014 |
| Q3 2014 | 2.96 | -6.38 | -68.3% | Sep 30, 2014 |
| Q2 2014 | 2.72 | -10.1 | -78.8% | Jun 30, 2014 |
| Q1 2014 | 3.69 | -15 | -80.3% | Mar 31, 2014 |
| Q4 2013 | 6.44 | -13.8 | -68.1% | Dec 31, 2013 |
| Q3 2013 | 9.35 | -12.5 | -57.3% | Sep 30, 2013 |
| Q2 2013 | 12.8 | -15.9 | -55.4% | Jun 30, 2013 |
| Q1 2013 | 18.7 | Mar 31, 2013 | ||
| Q4 2012 | 20.2 | Dec 31, 2012 | ||
| Q3 2012 | 21.9 | Sep 30, 2012 | ||
| Q2 2012 | 28.8 | Jun 30, 2012 |