| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 59.6 | +1.59 | +2.74% | Jun 30, 2024 |
| Q1 2024 | 60.1 | +3.26 | +5.74% | Mar 31, 2024 |
| Q4 2023 | 59.8 | +3.45 | +6.13% | Dec 31, 2023 |
| Q3 2023 | 59.1 | +2.64 | +4.68% | Sep 30, 2023 |
| Q2 2023 | 58 | +1.05 | +1.84% | Jun 30, 2023 |
| Q1 2023 | 56.8 | +0.13 | +0.23% | Mar 31, 2023 |
| Q4 2022 | 56.3 | +0.3 | +0.54% | Dec 31, 2022 |
| Q3 2022 | 56.5 | +0.88 | +1.58% | Sep 30, 2022 |
| Q2 2022 | 57 | -0.03 | -0.05% | Jun 30, 2022 |
| Q1 2022 | 56.7 | -3.5 | -5.82% | Mar 31, 2022 |
| Q4 2021 | 56 | -6.25 | -10% | Dec 31, 2021 |
| Q3 2021 | 55.6 | -9.52 | -14.6% | Sep 30, 2021 |
| Q2 2021 | 57 | -9.71 | -14.6% | Jun 30, 2021 |
| Q1 2021 | 60.2 | -6.69 | -10% | Mar 31, 2021 |
| Q4 2020 | 62.3 | -4.8 | -7.16% | Dec 31, 2020 |
| Q3 2020 | 65.1 | -1.68 | -2.52% | Sep 30, 2020 |
| Q2 2020 | 66.7 | +3.3 | +5.21% | Jun 30, 2020 |
| Q1 2020 | 66.8 | +7.49 | +12.6% | Mar 31, 2020 |
| Q4 2019 | 67.1 | +11.6 | +20.8% | Dec 31, 2019 |
| Q3 2019 | 66.8 | +14.6 | +28% | Sep 30, 2019 |
| Q2 2019 | 63.4 | +12.6 | +24.7% | Jun 30, 2019 |
| Q1 2019 | 59.4 | +7.56 | +14.6% | Mar 31, 2019 |
| Q4 2018 | 55.5 | +1.31 | +2.42% | Dec 31, 2018 |
| Q3 2018 | 52.2 | -4.06 | -7.22% | Sep 30, 2018 |
| Q2 2018 | 50.9 | -9.09 | -15.2% | Jun 30, 2018 |
| Q1 2018 | 51.8 | -8.9 | -14.7% | Mar 31, 2018 |
| Q4 2017 | 54.2 | +1.54 | +2.92% | Dec 31, 2017 |
| Q3 2017 | 56.2 | +3.44 | +6.52% | Sep 30, 2017 |
| Q2 2017 | 59.9 | +11 | +22.4% | Jun 30, 2017 |
| Q1 2017 | 60.7 | +12.1 | +24.8% | Mar 31, 2017 |
| Q4 2016 | 52.7 | -4.23 | -7.44% | Dec 31, 2016 |
| Q3 2016 | 52.8 | -5.38 | -9.25% | Sep 30, 2016 |
| Q2 2016 | 49 | -13.1 | -21.1% | Jun 30, 2016 |
| Q1 2016 | 48.6 | -15.6 | -24.2% | Mar 31, 2016 |
| Q4 2015 | 56.9 | -7.33 | -11.4% | Dec 31, 2015 |
| Q3 2015 | 58.2 | -7.34 | -11.2% | Sep 30, 2015 |
| Q2 2015 | 62.1 | -5.86 | -8.63% | Jun 30, 2015 |
| Q1 2015 | 64.2 | -4.83 | -7% | Mar 31, 2015 |
| Q4 2014 | 64.2 | -4.95 | -7.16% | Dec 31, 2014 |
| Q3 2014 | 65.5 | -4.03 | -5.8% | Sep 30, 2014 |
| Q2 2014 | 67.9 | -2.96 | -4.18% | Jun 30, 2014 |
| Q1 2014 | 69 | -2.91 | -4.05% | Mar 31, 2014 |
| Q4 2013 | 69.2 | -2.31 | -3.23% | Dec 31, 2013 |
| Q3 2013 | 69.5 | -0.99 | -1.4% | Sep 30, 2013 |
| Q2 2013 | 70.9 | +3.16 | +4.67% | Jun 30, 2013 |
| Q1 2013 | 72 | +5.52 | +8.31% | Mar 31, 2013 |
| Q4 2012 | 71.5 | +4.28 | +6.37% | Dec 31, 2012 |
| Q3 2012 | 70.5 | +1.04 | +1.5% | Sep 30, 2012 |
| Q2 2012 | 67.7 | +0.69 | +1.03% | Jun 30, 2012 |
| Q1 2012 | 66.4 | +3.99 | +6.39% | Mar 31, 2012 |
| Q4 2011 | 67.2 | +9.4 | +16.3% | Dec 31, 2011 |
| Q3 2011 | 69.5 | Sep 30, 2011 | ||
| Q2 2011 | 67.1 | Jun 30, 2011 | ||
| Q1 2011 | 62.4 | Mar 31, 2011 | ||
| Q4 2010 | 57.8 | Dec 31, 2010 |