| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q1 2024 | 48.5 | -8.3 | -14.6% | Mar 31, 2024 |
| Q4 2023 | 52.4 | -4.88 | -8.52% | Dec 31, 2023 |
| Q3 2023 | 56.5 | -0.67 | -1.17% | Sep 30, 2023 |
| Q2 2023 | 57.4 | +4.34 | +8.18% | Jun 30, 2023 |
| Q1 2023 | 56.8 | +3.77 | +7.12% | Mar 31, 2023 |
| Q4 2022 | 57.3 | +3.17 | +5.86% | Dec 31, 2022 |
| Q3 2022 | 57.1 | +2.13 | +3.87% | Sep 30, 2022 |
| Q2 2022 | 53.1 | -9.19 | -14.8% | Jun 30, 2022 |
| Q1 2022 | 53 | -6.9 | -11.5% | Mar 31, 2022 |
| Q4 2021 | 54.1 | +1.27 | +2.4% | Dec 31, 2021 |
| Q3 2021 | 55 | +1.26 | +2.35% | Sep 30, 2021 |
| Q2 2021 | 62.2 | +11.6 | +23% | Jun 30, 2021 |
| Q1 2021 | 59.9 | +12.1 | +25.3% | Mar 31, 2021 |
| Q4 2020 | 52.8 | +2.32 | +4.59% | Dec 31, 2020 |
| Q3 2020 | 53.7 | +3.72 | +7.44% | Sep 30, 2020 |
| Q2 2020 | 50.6 | -0.61 | -1.19% | Jun 30, 2020 |
| Q1 2020 | 47.8 | -4.98 | -9.44% | Mar 31, 2020 |
| Q4 2019 | 50.5 | -1.76 | -3.37% | Dec 31, 2019 |
| Q3 2019 | 50 | -5.02 | -9.12% | Sep 30, 2019 |
| Q2 2019 | 51.2 | -5.55 | -9.78% | Jun 30, 2019 |
| Q1 2019 | 52.8 | -7.03 | -11.8% | Mar 31, 2019 |
| Q4 2018 | 52.3 | -11.6 | -18.1% | Dec 31, 2018 |
| Q3 2018 | 55 | -7.59 | -12.1% | Sep 30, 2018 |
| Q2 2018 | 56.8 | -9.54 | -14.4% | Jun 30, 2018 |
| Q1 2018 | 59.8 | -9.22 | -13.4% | Mar 31, 2018 |
| Q4 2017 | 63.9 | -9.05 | -12.4% | Dec 31, 2017 |
| Q3 2017 | 62.6 | -12.5 | -16.7% | Sep 30, 2017 |
| Q2 2017 | 66.3 | -7.14 | -9.72% | Jun 30, 2017 |
| Q1 2017 | 69 | -3.8 | -5.22% | Mar 31, 2017 |
| Q4 2016 | 72.9 | +1.8 | +2.53% | Dec 31, 2016 |
| Q3 2016 | 75.2 | +3.93 | +5.52% | Sep 30, 2016 |
| Q2 2016 | 73.4 | +0.28 | +0.38% | Jun 30, 2016 |
| Q1 2016 | 72.8 | -3.12 | -4.11% | Mar 31, 2016 |
| Q4 2015 | 71.1 | -8.27 | -10.4% | Dec 31, 2015 |
| Q3 2015 | 71.2 | -8.23 | -10.4% | Sep 30, 2015 |
| Q2 2015 | 73.2 | -12.3 | -14.4% | Jun 30, 2015 |
| Q1 2015 | 75.9 | -5.45 | -6.7% | Mar 31, 2015 |
| Q4 2014 | 79.4 | +2.72 | +3.55% | Dec 31, 2014 |
| Q3 2014 | 79.4 | +4.71 | +6.3% | Sep 30, 2014 |
| Q2 2014 | 85.5 | +14.9 | +21% | Jun 30, 2014 |
| Q1 2014 | 81.4 | +1.14 | +1.42% | Mar 31, 2014 |
| Q4 2013 | 76.7 | -10.4 | -11.9% | Dec 31, 2013 |
| Q3 2013 | 74.7 | -17.1 | -18.6% | Sep 30, 2013 |
| Q2 2013 | 70.6 | -29.4 | -29.4% | Jun 30, 2013 |
| Q1 2013 | 80.2 | -18.6 | -18.8% | Mar 31, 2013 |
| Q4 2012 | 87.1 | -3.33 | -3.68% | Dec 31, 2012 |
| Q3 2012 | 91.8 | -0.47 | -0.51% | Sep 30, 2012 |
| Q2 2012 | 100 | +13.2 | +15.2% | Jun 30, 2012 |
| Q1 2012 | 98.8 | +11.1 | +12.7% | Mar 31, 2012 |
| Q4 2011 | 90.4 | -12.6 | -12.3% | Dec 31, 2011 |
| Q3 2011 | 92.3 | Sep 30, 2011 | ||
| Q2 2011 | 86.8 | Jun 30, 2011 | ||
| Q1 2011 | 87.7 | Mar 31, 2011 | ||
| Q4 2010 | 103 | Dec 31, 2010 |