| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 64.3 | -12.1 | -15.8% | Jun 30, 2024 |
| Q1 2024 | 67.4 | -9.46 | -12.3% | Mar 31, 2024 |
| Q4 2023 | 70.5 | -5.7 | -7.48% | Dec 31, 2023 |
| Q3 2023 | 74.4 | -0.24 | -0.32% | Sep 30, 2023 |
| Q2 2023 | 76.4 | +0.88 | +1.17% | Jun 30, 2023 |
| Q1 2023 | 76.9 | +0.71 | +0.93% | Mar 31, 2023 |
| Q4 2022 | 76.2 | +0.35 | +0.46% | Dec 31, 2022 |
| Q3 2022 | 74.6 | -0.84 | -1.11% | Sep 30, 2022 |
| Q2 2022 | 75.5 | +0.5 | +0.67% | Jun 30, 2022 |
| Q1 2022 | 76.2 | +1.04 | +1.39% | Mar 31, 2022 |
| Q4 2021 | 75.9 | -0.81 | -1.06% | Dec 31, 2021 |
| Q3 2021 | 75.5 | +0.01 | +0.01% | Sep 30, 2021 |
| Q2 2021 | 75 | +0.67 | +0.9% | Jun 30, 2021 |
| Q1 2021 | 75.1 | +2.76 | +3.82% | Mar 31, 2021 |
| Q4 2020 | 76.7 | +5.4 | +7.58% | Dec 31, 2020 |
| Q3 2020 | 75.5 | +2.75 | +3.78% | Sep 30, 2020 |
| Q2 2020 | 74.3 | +1.38 | +1.89% | Jun 30, 2020 |
| Q1 2020 | 72.4 | -1.28 | -1.74% | Mar 31, 2020 |
| Q4 2019 | 71.3 | -2.36 | -3.21% | Dec 31, 2019 |
| Q3 2019 | 72.7 | -2.34 | -3.12% | Sep 30, 2019 |
| Q2 2019 | 72.9 | -4.73 | -6.09% | Jun 30, 2019 |
| Q1 2019 | 73.6 | -6.82 | -8.48% | Mar 31, 2019 |
| Q4 2018 | 73.6 | -11.9 | -13.9% | Dec 31, 2018 |
| Q3 2018 | 75.1 | -16.2 | -17.8% | Sep 30, 2018 |
| Q2 2018 | 77.7 | -20.3 | -20.7% | Jun 30, 2018 |
| Q1 2018 | 80.5 | -23 | -22.2% | Mar 31, 2018 |
| Q4 2017 | 85.5 | -22.6 | -20.9% | Dec 31, 2017 |
| Q3 2017 | 91.3 | -14.4 | -13.6% | Sep 30, 2017 |
| Q2 2017 | 98 | -5.47 | -5.29% | Jun 30, 2017 |
| Q1 2017 | 103 | +2.06 | +2.03% | Mar 31, 2017 |
| Q4 2016 | 108 | +9.94 | +10.1% | Dec 31, 2016 |
| Q3 2016 | 106 | +7.38 | +7.5% | Sep 30, 2016 |
| Q2 2016 | 103 | +9.25 | +9.82% | Jun 30, 2016 |
| Q1 2016 | 101 | +11.1 | +12.3% | Mar 31, 2016 |
| Q4 2015 | 98.2 | +11.7 | +13.5% | Dec 31, 2015 |
| Q3 2015 | 98.4 | +14.7 | +17.5% | Sep 30, 2015 |
| Q2 2015 | 94.2 | +9.82 | +11.6% | Jun 30, 2015 |
| Q1 2015 | 90.3 | +4.18 | +4.85% | Mar 31, 2015 |
| Q4 2014 | 86.5 | -1.79 | -2.03% | Dec 31, 2014 |
| Q3 2014 | 83.7 | -6.26 | -6.96% | Sep 30, 2014 |
| Q2 2014 | 84.4 | -4.37 | -4.92% | Jun 30, 2014 |
| Q1 2014 | 86.1 | -0.08 | -0.09% | Mar 31, 2014 |
| Q4 2013 | 88.3 | +4.71 | +5.64% | Dec 31, 2013 |
| Q3 2013 | 90 | +7.01 | +8.45% | Sep 30, 2013 |
| Q2 2013 | 88.8 | +3.8 | +4.47% | Jun 30, 2013 |
| Q1 2013 | 86.2 | -1.92 | -2.18% | Mar 31, 2013 |
| Q4 2012 | 83.6 | -1.66 | -1.95% | Dec 31, 2012 |
| Q3 2012 | 83 | +1.15 | +1.41% | Sep 30, 2012 |
| Q2 2012 | 85 | +7.37 | +9.5% | Jun 30, 2012 |
| Q1 2012 | 88.1 | +15.7 | +21.8% | Mar 31, 2012 |
| Q4 2011 | 85.2 | Dec 31, 2011 | ||
| Q3 2011 | 81.8 | Sep 30, 2011 | ||
| Q2 2011 | 77.6 | Jun 30, 2011 | ||
| Q1 2011 | 72.4 | Mar 31, 2011 |