| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q1 2024 | 69.2 | -8.3 | -10.7% | Mar 31, 2024 |
| Q4 2023 | 68.5 | -11.1 | -13.9% | Dec 31, 2023 |
| Q3 2023 | 71.3 | -8.03 | -10.1% | Sep 30, 2023 |
| Q2 2023 | 74.3 | -5.72 | -7.15% | Jun 30, 2023 |
| Q1 2023 | 77.5 | -4.98 | -6.04% | Mar 31, 2023 |
| Q4 2022 | 79.6 | -3.84 | -4.6% | Dec 31, 2022 |
| Q3 2022 | 79.3 | -4.64 | -5.53% | Sep 30, 2022 |
| Q2 2022 | 80 | -2.85 | -3.44% | Jun 30, 2022 |
| Q1 2022 | 82.5 | +7.07 | +9.37% | Mar 31, 2022 |
| Q4 2021 | 83.4 | +12.8 | +18.1% | Dec 31, 2021 |
| Q3 2021 | 83.9 | +14.5 | +20.9% | Sep 30, 2021 |
| Q2 2021 | 82.8 | +13.9 | +20.1% | Jun 30, 2021 |
| Q1 2021 | 75.4 | +4.66 | +6.59% | Mar 31, 2021 |
| Q4 2020 | 70.6 | -2.62 | -3.58% | Dec 31, 2020 |
| Q3 2020 | 69.4 | -7.01 | -9.17% | Sep 30, 2020 |
| Q2 2020 | 69 | -12.9 | -15.8% | Jun 30, 2020 |
| Q1 2020 | 70.8 | -16.5 | -18.9% | Mar 31, 2020 |
| Q4 2019 | 73.2 | -16 | -17.9% | Dec 31, 2019 |
| Q3 2019 | 76.4 | -11 | -12.6% | Sep 30, 2019 |
| Q2 2019 | 81.9 | -3.62 | -4.23% | Jun 30, 2019 |
| Q1 2019 | 87.3 | +5.12 | +6.23% | Mar 31, 2019 |
| Q4 2018 | 89.2 | +8.66 | +10.8% | Dec 31, 2018 |
| Q3 2018 | 87.5 | +7.7 | +9.66% | Sep 30, 2018 |
| Q2 2018 | 85.5 | +7.06 | +9% | Jun 30, 2018 |
| Q1 2018 | 82.2 | +5.65 | +7.39% | Mar 31, 2018 |
| Q4 2017 | 80.6 | +7.38 | +10.1% | Dec 31, 2017 |
| Q3 2017 | 79.8 | +7.05 | +9.7% | Sep 30, 2017 |
| Q2 2017 | 78.4 | +9.45 | +13.7% | Jun 30, 2017 |
| Q1 2017 | 76.5 | +9.57 | +14.3% | Mar 31, 2017 |
| Q4 2016 | 73.2 | +8.56 | +13.2% | Dec 31, 2016 |
| Q3 2016 | 72.7 | +8.84 | +13.8% | Sep 30, 2016 |
| Q2 2016 | 69 | +1.83 | +2.73% | Jun 30, 2016 |
| Q1 2016 | 66.9 | -8.35 | -11.1% | Mar 31, 2016 |
| Q4 2015 | 64.6 | -16.4 | -20.2% | Dec 31, 2015 |
| Q3 2015 | 63.9 | -20.7 | -24.5% | Sep 30, 2015 |
| Q2 2015 | 67.2 | -23.5 | -25.9% | Jun 30, 2015 |
| Q1 2015 | 75.3 | -15.1 | -16.7% | Mar 31, 2015 |
| Q4 2014 | 81 | -11 | -12% | Dec 31, 2014 |
| Q3 2014 | 84.6 | -6.32 | -6.95% | Sep 30, 2014 |
| Q2 2014 | 90.7 | +1.12 | +1.25% | Jun 30, 2014 |
| Q1 2014 | 90.4 | +3.64 | +4.2% | Mar 31, 2014 |
| Q4 2013 | 92 | +8.02 | +9.55% | Dec 31, 2013 |
| Q3 2013 | 90.9 | +6.24 | +7.37% | Sep 30, 2013 |
| Q2 2013 | 89.5 | +4.6 | +5.42% | Jun 30, 2013 |
| Q1 2013 | 86.7 | +3.56 | +4.28% | Mar 31, 2013 |
| Q4 2012 | 84 | Dec 31, 2012 | ||
| Q3 2012 | 84.7 | Sep 30, 2012 | ||
| Q2 2012 | 84.9 | Jun 30, 2012 | ||
| Q1 2012 | 83.2 | Mar 31, 2012 |