| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 86.5 | +0.86 | +1% | Jun 30, 2024 |
| Q1 2024 | 85.6 | -1.26 | -1.45% | Mar 31, 2024 |
| Q4 2023 | 83.6 | -4.03 | -4.6% | Dec 31, 2023 |
| Q3 2023 | 85.4 | +0.92 | +1.09% | Sep 30, 2023 |
| Q2 2023 | 85.7 | +3.01 | +3.64% | Jun 30, 2023 |
| Q1 2023 | 86.9 | +8.04 | +10.2% | Mar 31, 2023 |
| Q4 2022 | 87.7 | +11.2 | +14.6% | Dec 31, 2022 |
| Q3 2022 | 84.5 | +5.39 | +6.82% | Sep 30, 2022 |
| Q2 2022 | 82.7 | -0.91 | -1.09% | Jun 30, 2022 |
| Q1 2022 | 78.8 | -8.09 | -9.31% | Mar 31, 2022 |
| Q4 2021 | 76.5 | -13.1 | -14.6% | Dec 31, 2021 |
| Q3 2021 | 79.1 | -11.1 | -12.3% | Sep 30, 2021 |
| Q2 2021 | 83.6 | -3.97 | -4.54% | Jun 30, 2021 |
| Q1 2021 | 86.9 | -1.51 | -1.71% | Mar 31, 2021 |
| Q4 2020 | 89.6 | -0.19 | -0.21% | Dec 31, 2020 |
| Q3 2020 | 90.2 | +1.41 | +1.59% | Sep 30, 2020 |
| Q2 2020 | 87.5 | -1.31 | -1.47% | Jun 30, 2020 |
| Q1 2020 | 88.5 | -0.93 | -1.04% | Mar 31, 2020 |
| Q4 2019 | 89.8 | -1.48 | -1.62% | Dec 31, 2019 |
| Q3 2019 | 88.7 | -4.57 | -4.9% | Sep 30, 2019 |
| Q2 2019 | 88.9 | -6.48 | -6.8% | Jun 30, 2019 |
| Q1 2019 | 89.4 | -7.48 | -7.72% | Mar 31, 2019 |
| Q4 2018 | 91.3 | -5.64 | -5.82% | Dec 31, 2018 |
| Q3 2018 | 93.3 | -1.34 | -1.42% | Sep 30, 2018 |
| Q2 2018 | 95.3 | +4 | +4.38% | Jun 30, 2018 |
| Q1 2018 | 96.9 | +8.91 | +10.1% | Mar 31, 2018 |
| Q4 2017 | 96.9 | +10.8 | +12.5% | Dec 31, 2017 |
| Q3 2017 | 94.7 | +10.6 | +12.6% | Sep 30, 2017 |
| Q2 2017 | 91.3 | +12 | +15.1% | Jun 30, 2017 |
| Q1 2017 | 88 | +11.8 | +15.5% | Mar 31, 2017 |
| Q4 2016 | 86.1 | +9.31 | +12.1% | Dec 31, 2016 |
| Q3 2016 | 84.1 | +5.92 | +7.57% | Sep 30, 2016 |
| Q2 2016 | 79.4 | -4.66 | -5.55% | Jun 30, 2016 |
| Q1 2016 | 76.2 | -14 | -15.5% | Mar 31, 2016 |
| Q4 2015 | 76.8 | -14.6 | -15.9% | Dec 31, 2015 |
| Q3 2015 | 78.2 | -15.2 | -16.3% | Sep 30, 2015 |
| Q2 2015 | 84 | -10.6 | -11.2% | Jun 30, 2015 |
| Q1 2015 | 90.2 | -4.93 | -5.18% | Mar 31, 2015 |
| Q4 2014 | 91.4 | -4.87 | -5.06% | Dec 31, 2014 |
| Q3 2014 | 93.4 | -2.43 | -2.54% | Sep 30, 2014 |
| Q2 2014 | 94.6 | +0.19 | +0.2% | Jun 30, 2014 |
| Q1 2014 | 95.1 | +5.15 | +5.72% | Mar 31, 2014 |
| Q4 2013 | 96.2 | +9.33 | +10.7% | Dec 31, 2013 |
| Q3 2013 | 95.8 | +12.3 | +14.7% | Sep 30, 2013 |
| Q2 2013 | 94.4 | +17.9 | +23.4% | Jun 30, 2013 |
| Q1 2013 | 90 | +17 | +23.3% | Mar 31, 2013 |
| Q4 2012 | 86.9 | +18.2 | +26.5% | Dec 31, 2012 |
| Q3 2012 | 83.5 | +18.2 | +27.8% | Sep 30, 2012 |
| Q2 2012 | 76.5 | Jun 30, 2012 | ||
| Q1 2012 | 73 | Mar 31, 2012 | ||
| Q4 2011 | 68.7 | Dec 31, 2011 | ||
| Q3 2011 | 65.3 | Sep 30, 2011 |