| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q1 2024 | 83.6 | +4.31 | +5.44% | Mar 31, 2024 |
| Q4 2023 | 83.9 | +4.83 | +6.11% | Dec 31, 2023 |
| Q3 2023 | 82.8 | +2.66 | +3.32% | Sep 30, 2023 |
| Q2 2023 | 81.3 | +1.39 | +1.74% | Jun 30, 2023 |
| Q1 2023 | 79.3 | -0.2 | -0.25% | Mar 31, 2023 |
| Q4 2022 | 79 | +0.65 | +0.83% | Dec 31, 2022 |
| Q3 2022 | 80.1 | +2.25 | +2.89% | Sep 30, 2022 |
| Q2 2022 | 79.9 | -3.01 | -3.63% | Jun 30, 2022 |
| Q1 2022 | 79.5 | -7.14 | -8.24% | Mar 31, 2022 |
| Q4 2021 | 78.4 | -10.9 | -12.2% | Dec 31, 2021 |
| Q3 2021 | 77.8 | -9.4 | -10.8% | Sep 30, 2021 |
| Q2 2021 | 82.9 | +1.7 | +2.09% | Jun 30, 2021 |
| Q1 2021 | 86.6 | +7.87 | +9.99% | Mar 31, 2021 |
| Q4 2020 | 89.3 | +14 | +18.6% | Dec 31, 2020 |
| Q3 2020 | 87.3 | +10.9 | +14.3% | Sep 30, 2020 |
| Q2 2020 | 81.2 | +4.82 | +6.31% | Jun 30, 2020 |
| Q1 2020 | 78.8 | +3.64 | +4.84% | Mar 31, 2020 |
| Q4 2019 | 75.3 | -1.74 | -2.26% | Dec 31, 2019 |
| Q3 2019 | 76.3 | -3.4 | -4.27% | Sep 30, 2019 |
| Q2 2019 | 76.4 | -8.3 | -9.8% | Jun 30, 2019 |
| Q1 2019 | 75.1 | -13.8 | -15.5% | Mar 31, 2019 |
| Q4 2018 | 77.1 | -13.9 | -15.3% | Dec 31, 2018 |
| Q3 2018 | 79.7 | -10.9 | -12% | Sep 30, 2018 |
| Q2 2018 | 84.7 | -4.82 | -5.38% | Jun 30, 2018 |
| Q1 2018 | 89 | -1.97 | -2.17% | Mar 31, 2018 |
| Q4 2017 | 91 | -2.09 | -2.25% | Dec 31, 2017 |
| Q3 2017 | 90.6 | -1.77 | -1.92% | Sep 30, 2017 |
| Q2 2017 | 89.5 | -1.68 | -1.84% | Jun 30, 2017 |
| Q1 2017 | 90.9 | +3.75 | +4.3% | Mar 31, 2017 |
| Q4 2016 | 93 | +7.67 | +8.99% | Dec 31, 2016 |
| Q3 2016 | 92.3 | +6.04 | +7% | Sep 30, 2016 |
| Q2 2016 | 91.2 | -0.7 | -0.76% | Jun 30, 2016 |
| Q1 2016 | 87.2 | -13.7 | -13.6% | Mar 31, 2016 |
| Q4 2015 | 85.4 | -20.3 | -19.2% | Dec 31, 2015 |
| Q3 2015 | 86.3 | -25.1 | -22.5% | Sep 30, 2015 |
| Q2 2015 | 91.9 | -21.6 | -19% | Jun 30, 2015 |
| Q1 2015 | 101 | -10.6 | -9.54% | Mar 31, 2015 |
| Q4 2014 | 106 | -3.42 | -3.14% | Dec 31, 2014 |
| Q3 2014 | 111 | +3.18 | +2.94% | Sep 30, 2014 |
| Q2 2014 | 113 | +6.23 | +5.81% | Jun 30, 2014 |
| Q1 2014 | 112 | +0.21 | +0.19% | Mar 31, 2014 |
| Q4 2013 | 109 | -8.36 | -7.12% | Dec 31, 2013 |
| Q3 2013 | 108 | -11.6 | -9.69% | Sep 30, 2013 |
| Q2 2013 | 107 | -11.9 | -9.99% | Jun 30, 2013 |
| Q1 2013 | 111 | -2.89 | -2.53% | Mar 31, 2013 |
| Q4 2012 | 117 | +6.02 | +5.4% | Dec 31, 2012 |
| Q3 2012 | 120 | +7.88 | +7.04% | Sep 30, 2012 |
| Q2 2012 | 119 | +5.96 | +5.27% | Jun 30, 2012 |
| Q1 2012 | 114 | +2.24 | +2% | Mar 31, 2012 |
| Q4 2011 | 111 | -0.6 | -0.54% | Dec 31, 2011 |
| Q3 2011 | 112 | Sep 30, 2011 | ||
| Q2 2011 | 113 | Jun 30, 2011 | ||
| Q1 2011 | 112 | Mar 31, 2011 | ||
| Q4 2010 | 112 | Dec 31, 2010 |