| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q1 2024 | 72.4 | +1.6 | +2.26% | Mar 31, 2024 |
| Q4 2023 | 72.4 | +4.65 | +6.87% | Dec 31, 2023 |
| Q3 2023 | 73.5 | +6.56 | +9.8% | Sep 30, 2023 |
| Q2 2023 | 72.7 | +5.82 | +8.7% | Jun 30, 2023 |
| Q1 2023 | 70.8 | +2.29 | +3.34% | Mar 31, 2023 |
| Q4 2022 | 67.7 | -1.15 | -1.67% | Dec 31, 2022 |
| Q3 2022 | 67 | -4.28 | -6.01% | Sep 30, 2022 |
| Q2 2022 | 66.9 | -8.11 | -10.8% | Jun 30, 2022 |
| Q1 2022 | 68.5 | -9.09 | -11.7% | Mar 31, 2022 |
| Q4 2021 | 68.9 | -10.6 | -13.4% | Dec 31, 2021 |
| Q3 2021 | 71.3 | -10.7 | -13% | Sep 30, 2021 |
| Q2 2021 | 75 | +0.61 | +0.82% | Jun 30, 2021 |
| Q1 2021 | 77.6 | +8.58 | +12.4% | Mar 31, 2021 |
| Q4 2020 | 79.5 | +12.4 | +18.4% | Dec 31, 2020 |
| Q3 2020 | 81.9 | +15.8 | +24% | Sep 30, 2020 |
| Q2 2020 | 74.4 | +4.88 | +7.02% | Jun 30, 2020 |
| Q1 2020 | 69 | -4.11 | -5.62% | Mar 31, 2020 |
| Q4 2019 | 67.1 | -13 | -16.2% | Dec 31, 2019 |
| Q3 2019 | 66.1 | -15.4 | -18.9% | Sep 30, 2019 |
| Q2 2019 | 69.5 | -16.6 | -19.3% | Jun 30, 2019 |
| Q1 2019 | 73.1 | -18.8 | -20.5% | Mar 31, 2019 |
| Q4 2018 | 80.1 | -10.8 | -11.9% | Dec 31, 2018 |
| Q3 2018 | 81.5 | -8.36 | -9.31% | Sep 30, 2018 |
| Q2 2018 | 86.2 | -4.32 | -4.78% | Jun 30, 2018 |
| Q1 2018 | 91.9 | +2.59 | +2.9% | Mar 31, 2018 |
| Q4 2017 | 90.9 | +1.31 | +1.46% | Dec 31, 2017 |
| Q3 2017 | 89.8 | -2.15 | -2.34% | Sep 30, 2017 |
| Q2 2017 | 90.5 | +2.24 | +2.54% | Jun 30, 2017 |
| Q1 2017 | 89.4 | +4.27 | +5.02% | Mar 31, 2017 |
| Q4 2016 | 89.6 | +5.74 | +6.84% | Dec 31, 2016 |
| Q3 2016 | 92 | +10.2 | +12.5% | Sep 30, 2016 |
| Q2 2016 | 88.2 | +2.45 | +2.86% | Jun 30, 2016 |
| Q1 2016 | 85.1 | -4.39 | -4.91% | Mar 31, 2016 |
| Q4 2015 | 83.9 | -8.85 | -9.54% | Dec 31, 2015 |
| Q3 2015 | 81.8 | -14.1 | -14.7% | Sep 30, 2015 |
| Q2 2015 | 85.8 | -11.3 | -11.6% | Jun 30, 2015 |
| Q1 2015 | 89.5 | -9.61 | -9.7% | Mar 31, 2015 |
| Q4 2014 | 92.7 | -7.72 | -7.69% | Dec 31, 2014 |
| Q3 2014 | 95.8 | -5.66 | -5.58% | Sep 30, 2014 |
| Q2 2014 | 97 | -6.52 | -6.3% | Jun 30, 2014 |
| Q1 2014 | 99.1 | -11.6 | -10.5% | Mar 31, 2014 |
| Q4 2013 | 100 | -10.9 | -9.76% | Dec 31, 2013 |
| Q3 2013 | 101 | -12.5 | -11% | Sep 30, 2013 |
| Q2 2013 | 104 | -10.7 | -9.37% | Jun 30, 2013 |
| Q1 2013 | 111 | +6.72 | +6.46% | Mar 31, 2013 |
| Q4 2012 | 111 | Dec 31, 2012 | ||
| Q3 2012 | 114 | Sep 30, 2012 | ||
| Q2 2012 | 114 | Jun 30, 2012 | ||
| Q1 2012 | 104 | Mar 31, 2012 |