| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q1 2024 | 91.8 | +10.4 | +12.7% | Mar 31, 2024 |
| Q4 2023 | 88.4 | +9.89 | +12.6% | Dec 31, 2023 |
| Q3 2023 | 89.1 | +12.5 | +16.3% | Sep 30, 2023 |
| Q2 2023 | 85.7 | +9.58 | +12.6% | Jun 30, 2023 |
| Q1 2023 | 81.4 | +1.57 | +1.97% | Mar 31, 2023 |
| Q4 2022 | 78.5 | +0.16 | +0.2% | Dec 31, 2022 |
| Q3 2022 | 76.6 | +2.19 | +2.94% | Sep 30, 2022 |
| Q2 2022 | 76.1 | -2.13 | -2.72% | Jun 30, 2022 |
| Q1 2022 | 79.9 | +8.26 | +11.5% | Mar 31, 2022 |
| Q4 2021 | 78.3 | +1.88 | +2.46% | Dec 31, 2021 |
| Q3 2021 | 74.4 | -9.77 | -11.6% | Sep 30, 2021 |
| Q2 2021 | 78.2 | -5.18 | -6.21% | Jun 30, 2021 |
| Q1 2021 | 71.6 | -20.6 | -22.3% | Mar 31, 2021 |
| Q4 2020 | 76.5 | -16.8 | -18% | Dec 31, 2020 |
| Q3 2020 | 84.2 | -8.59 | -9.26% | Sep 30, 2020 |
| Q2 2020 | 83.4 | -10.7 | -11.4% | Jun 30, 2020 |
| Q1 2020 | 92.2 | -2.25 | -2.38% | Mar 31, 2020 |
| Q4 2019 | 93.2 | -0.52 | -0.56% | Dec 31, 2019 |
| Q3 2019 | 92.8 | -0.68 | -0.73% | Sep 30, 2019 |
| Q2 2019 | 94.1 | +3.06 | +3.36% | Jun 30, 2019 |
| Q1 2019 | 94.5 | +4.4 | +4.89% | Mar 31, 2019 |
| Q4 2018 | 93.7 | +4.52 | +5.07% | Dec 31, 2018 |
| Q3 2018 | 93.4 | +5.62 | +6.4% | Sep 30, 2018 |
| Q2 2018 | 91.1 | +2.19 | +2.47% | Jun 30, 2018 |
| Q1 2018 | 90.1 | -2.02 | -2.19% | Mar 31, 2018 |
| Q4 2017 | 89.2 | -7.35 | -7.61% | Dec 31, 2017 |
| Q3 2017 | 87.8 | -14 | -13.8% | Sep 30, 2017 |
| Q2 2017 | 88.9 | -17 | -16% | Jun 30, 2017 |
| Q1 2017 | 92.1 | -13.6 | -12.8% | Mar 31, 2017 |
| Q4 2016 | 96.6 | -8.82 | -8.37% | Dec 31, 2016 |
| Q3 2016 | 102 | -3.77 | -3.57% | Sep 30, 2016 |
| Q2 2016 | 106 | +3.51 | +3.43% | Jun 30, 2016 |
| Q1 2016 | 106 | +4.33 | +4.27% | Mar 31, 2016 |
| Q4 2015 | 105 | +4.72 | +4.69% | Dec 31, 2015 |
| Q3 2015 | 106 | +7.43 | +7.57% | Sep 30, 2015 |
| Q2 2015 | 102 | +3.67 | +3.72% | Jun 30, 2015 |
| Q1 2015 | 101 | +2.62 | +2.66% | Mar 31, 2015 |
| Q4 2014 | 101 | +2.2 | +2.23% | Dec 31, 2014 |
| Q3 2014 | 98.2 | -0.28 | -0.28% | Sep 30, 2014 |
| Q2 2014 | 98.6 | -0.99 | -0.99% | Jun 30, 2014 |
| Q1 2014 | 98.7 | +1.28 | +1.31% | Mar 31, 2014 |
| Q4 2013 | 98.5 | +4.1 | +4.34% | Dec 31, 2013 |
| Q3 2013 | 98.5 | +5.8 | +6.26% | Sep 30, 2013 |
| Q2 2013 | 99.6 | +8.72 | +9.59% | Jun 30, 2013 |
| Q1 2013 | 97.4 | +5.21 | +5.65% | Mar 31, 2013 |
| Q4 2012 | 94.4 | +3.58 | +3.94% | Dec 31, 2012 |
| Q3 2012 | 92.7 | +4.05 | +4.57% | Sep 30, 2012 |
| Q2 2012 | 90.9 | +6.25 | +7.38% | Jun 30, 2012 |
| Q1 2012 | 92.2 | +15.5 | +20.1% | Mar 31, 2012 |
| Q4 2011 | 90.8 | Dec 31, 2011 | ||
| Q3 2011 | 88.6 | Sep 30, 2011 | ||
| Q2 2011 | 84.7 | Jun 30, 2011 | ||
| Q1 2011 | 76.8 | Mar 31, 2011 |