| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 82.4 | +2.63 | +3.3% | Jun 30, 2024 |
| Q1 2024 | 80.2 | -1.23 | -1.51% | Mar 31, 2024 |
| Q4 2023 | 78.9 | -3.55 | -4.31% | Dec 31, 2023 |
| Q3 2023 | 79.1 | -4.03 | -4.85% | Sep 30, 2023 |
| Q2 2023 | 79.8 | -2.8 | -3.39% | Jun 30, 2023 |
| Q1 2023 | 81.4 | +0.34 | +0.42% | Mar 31, 2023 |
| Q4 2022 | 82.4 | +2.56 | +3.21% | Dec 31, 2022 |
| Q3 2022 | 83.1 | -1.1 | -1.31% | Sep 30, 2022 |
| Q2 2022 | 82.6 | +0.36 | +0.44% | Jun 30, 2022 |
| Q1 2022 | 81.1 | -2.31 | -2.77% | Mar 31, 2022 |
| Q4 2021 | 79.9 | -9.63 | -10.8% | Dec 31, 2021 |
| Q3 2021 | 84.2 | +0.9 | +1.08% | Sep 30, 2021 |
| Q2 2021 | 82.2 | +0.07 | +0.09% | Jun 30, 2021 |
| Q1 2021 | 83.4 | +3.6 | +4.51% | Mar 31, 2021 |
| Q4 2020 | 89.5 | +14.2 | +18.8% | Dec 31, 2020 |
| Q3 2020 | 83.3 | +7.18 | +9.43% | Sep 30, 2020 |
| Q2 2020 | 82.2 | +5.27 | +6.85% | Jun 30, 2020 |
| Q1 2020 | 79.8 | +2.29 | +2.96% | Mar 31, 2020 |
| Q4 2019 | 75.3 | -1.15 | -1.5% | Dec 31, 2019 |
| Q3 2019 | 76.2 | +2.04 | +2.75% | Sep 30, 2019 |
| Q2 2019 | 76.9 | +3.99 | +5.47% | Jun 30, 2019 |
| Q1 2019 | 77.5 | +6.99 | +9.92% | Mar 31, 2019 |
| Q4 2018 | 76.5 | +8.04 | +11.8% | Dec 31, 2018 |
| Q3 2018 | 74.1 | +7.95 | +12% | Sep 30, 2018 |
| Q2 2018 | 72.9 | +8.66 | +13.5% | Jun 30, 2018 |
| Q1 2018 | 70.5 | +6.38 | +9.95% | Mar 31, 2018 |
| Q4 2017 | 68.4 | +4.64 | +7.28% | Dec 31, 2017 |
| Q3 2017 | 66.2 | +4.33 | +7% | Sep 30, 2017 |
| Q2 2017 | 64.3 | +2.71 | +4.4% | Jun 30, 2017 |
| Q1 2017 | 64.1 | +2.62 | +4.26% | Mar 31, 2017 |
| Q4 2016 | 63.8 | +1.7 | +2.74% | Dec 31, 2016 |
| Q3 2016 | 61.8 | -3.36 | -5.15% | Sep 30, 2016 |
| Q2 2016 | 61.6 | -5.31 | -7.94% | Jun 30, 2016 |
| Q1 2016 | 61.5 | -7.19 | -10.5% | Mar 31, 2016 |
| Q4 2015 | 62.1 | -7.23 | -10.4% | Dec 31, 2015 |
| Q3 2015 | 65.2 | -5.4 | -7.65% | Sep 30, 2015 |
| Q2 2015 | 66.9 | -4.03 | -5.69% | Jun 30, 2015 |
| Q1 2015 | 68.7 | -1.83 | -2.6% | Mar 31, 2015 |
| Q4 2014 | 69.3 | -2.91 | -4.03% | Dec 31, 2014 |
| Q3 2014 | 70.6 | -0.27 | -0.38% | Sep 30, 2014 |
| Q2 2014 | 70.9 | -1.15 | -1.6% | Jun 30, 2014 |
| Q1 2014 | 70.5 | -2.78 | -3.79% | Mar 31, 2014 |
| Q4 2013 | 72.2 | +0.93 | +1.31% | Dec 31, 2013 |
| Q3 2013 | 70.9 | -1.43 | -1.98% | Sep 30, 2013 |
| Q2 2013 | 72 | -0.53 | -0.73% | Jun 30, 2013 |
| Q1 2013 | 73.3 | -0.08 | -0.11% | Mar 31, 2013 |
| Q4 2012 | 71.3 | Dec 31, 2012 | ||
| Q3 2012 | 72.3 | Sep 30, 2012 | ||
| Q2 2012 | 72.6 | Jun 30, 2012 | ||
| Q1 2012 | 73.4 | Mar 31, 2012 |