| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q2 2024 | 59.9 | -1.08 | -1.77% | Jun 30, 2024 |
| Q1 2024 | 60.3 | -1.35 | -2.19% | Mar 31, 2024 |
| Q4 2023 | 60.4 | -1.28 | -2.07% | Dec 31, 2023 |
| Q3 2023 | 60.7 | -1.31 | -2.11% | Sep 30, 2023 |
| Q2 2023 | 61 | -1.09 | -1.76% | Jun 30, 2023 |
| Q1 2023 | 61.6 | -0.68 | -1.09% | Mar 31, 2023 |
| Q4 2022 | 61.7 | -0.32 | -0.52% | Dec 31, 2022 |
| Q3 2022 | 62 | -1.59 | -2.5% | Sep 30, 2022 |
| Q2 2022 | 62.1 | -1.81 | -2.83% | Jun 30, 2022 |
| Q1 2022 | 62.3 | -3.29 | -5.02% | Mar 31, 2022 |
| Q4 2021 | 62 | -7.29 | -10.5% | Dec 31, 2021 |
| Q3 2021 | 63.6 | -7.55 | -10.6% | Sep 30, 2021 |
| Q2 2021 | 63.9 | -10.4 | -13.9% | Jun 30, 2021 |
| Q1 2021 | 65.6 | -9.96 | -13.2% | Mar 31, 2021 |
| Q4 2020 | 69.3 | -5.63 | -7.51% | Dec 31, 2020 |
| Q3 2020 | 71.1 | -4.85 | -6.39% | Sep 30, 2020 |
| Q2 2020 | 74.3 | -3.51 | -4.51% | Jun 30, 2020 |
| Q1 2020 | 75.5 | -3.83 | -4.83% | Mar 31, 2020 |
| Q4 2019 | 75 | -6.25 | -7.7% | Dec 31, 2019 |
| Q3 2019 | 75.9 | -5.37 | -6.6% | Sep 30, 2019 |
| Q2 2019 | 77.8 | -4.01 | -4.9% | Jun 30, 2019 |
| Q1 2019 | 79.4 | -2.95 | -3.58% | Mar 31, 2019 |
| Q4 2018 | 81.2 | -1.25 | -1.52% | Dec 31, 2018 |
| Q3 2018 | 81.3 | -0.94 | -1.14% | Sep 30, 2018 |
| Q2 2018 | 81.8 | +0.01 | +0.01% | Jun 30, 2018 |
| Q1 2018 | 82.3 | +0.92 | +1.13% | Mar 31, 2018 |
| Q4 2017 | 82.5 | +1.17 | +1.44% | Dec 31, 2017 |
| Q3 2017 | 82.3 | -0.08 | -0.1% | Sep 30, 2017 |
| Q2 2017 | 81.8 | -1.43 | -1.72% | Jun 30, 2017 |
| Q1 2017 | 81.4 | -2.79 | -3.31% | Mar 31, 2017 |
| Q4 2016 | 81.3 | -4 | -4.69% | Dec 31, 2016 |
| Q3 2016 | 82.3 | -3.97 | -4.6% | Sep 30, 2016 |
| Q2 2016 | 83.2 | -4.23 | -4.84% | Jun 30, 2016 |
| Q1 2016 | 84.2 | -4.57 | -5.15% | Mar 31, 2016 |
| Q4 2015 | 85.3 | -5.15 | -5.7% | Dec 31, 2015 |
| Q3 2015 | 86.3 | -5.75 | -6.25% | Sep 30, 2015 |
| Q2 2015 | 87.5 | -6.77 | -7.18% | Jun 30, 2015 |
| Q1 2015 | 88.8 | -7.12 | -7.43% | Mar 31, 2015 |
| Q4 2014 | 90.4 | -6.87 | -7.06% | Dec 31, 2014 |
| Q3 2014 | 92.1 | -5.74 | -5.87% | Sep 30, 2014 |
| Q2 2014 | 94.2 | -4.44 | -4.5% | Jun 30, 2014 |
| Q1 2014 | 95.9 | -5.2 | -5.15% | Mar 31, 2014 |
| Q4 2013 | 97.3 | -6.94 | -6.66% | Dec 31, 2013 |
| Q3 2013 | 97.8 | -12.1 | -11% | Sep 30, 2013 |
| Q2 2013 | 98.7 | -19.4 | -16.4% | Jun 30, 2013 |
| Q1 2013 | 101 | -25.6 | -20.2% | Mar 31, 2013 |
| Q4 2012 | 104 | -32.8 | -23.9% | Dec 31, 2012 |
| Q3 2012 | 110 | -36.5 | -24.9% | Sep 30, 2012 |
| Q2 2012 | 118 | -31.5 | -21.1% | Jun 30, 2012 |
| Q1 2012 | 127 | -25.2 | -16.6% | Mar 31, 2012 |
| Q4 2011 | 137 | -14.8 | -9.74% | Dec 31, 2011 |
| Q3 2011 | 146 | Sep 30, 2011 | ||
| Q2 2011 | 150 | Jun 30, 2011 | ||
| Q1 2011 | 152 | Mar 31, 2011 | ||
| Q4 2010 | 152 | Dec 31, 2010 |