| Period | Value | YoY Chg | Change % | Start Date | End Date |
|---|---|---|---|---|---|
| Q1 2024 | 66.8 | +0.49 | +0.74% | Mar 31, 2024 | |
| Q4 2023 | 63.8 | -2.32 | -3.51% | Dec 31, 2023 | |
| Q3 2023 | 63.6 | -6.2 | -8.89% | Sep 30, 2023 | |
| Q2 2023 | 65.5 | -5.29 | -7.47% | Jun 30, 2023 | |
| Q1 2023 | 66.3 | -2.9 | -4.19% | Mar 31, 2023 | |
| Q4 2022 | 66.1 | -1.19 | -1.77% | Dec 31, 2022 | |
| Q3 2022 | 69.8 | +4.44 | +6.8% | Sep 30, 2022 | |
| Q2 2022 | 70.8 | +5.45 | +8.34% | Jun 30, 2022 | |
| Q1 2022 | 69.2 | +5.51 | +8.65% | Mar 31, 2022 | |
| Q4 2021 | 67.3 | +5.86 | +9.54% | Dec 31, 2021 | |
| Q3 2021 | 65.3 | +8.01 | +14% | Sep 30, 2021 | |
| Q2 2021 | 65.4 | +13.3 | +25.5% | Jun 30, 2021 | |
| Q1 2021 | 63.7 | +14.4 | +29.2% | Mar 31, 2021 | |
| Q4 2020 | 61.4 | +13.4 | +27.9% | Dec 31, 2020 | |
| Q3 2020 | 57.3 | +10.3 | +22% | Sep 30, 2020 | |
| Q2 2020 | 52.1 | +3.82 | +7.92% | Jun 30, 2020 | |
| Q1 2020 | 49.3 | -1.71 | -3.35% | Mar 31, 2020 | |
| Q4 2019 | 48 | -3.48 | -6.76% | Dec 31, 2019 | |
| Q3 2019 | 47 | -5.14 | -9.86% | Sep 30, 2019 | |
| Q2 2019 | 48.3 | -2.56 | -5.04% | Jun 30, 2019 | |
| Q1 2019 | 51 | +0.81 | +1.61% | Mar 31, 2019 | |
| Q4 2018 | 51.5 | -0.19 | -0.37% | Dec 31, 2018 | |
| Q3 2018 | 52.1 | -2.29 | -4.21% | Sep 30, 2018 | |
| Q2 2018 | 50.8 | -6.72 | -11.7% | Jun 30, 2018 | |
| Q1 2018 | 50.2 | -11.3 | -18.4% | Mar 31, 2018 | |
| Q4 2017 | 51.7 | -13.1 | -20.2% | Dec 31, 2017 | |
| Q3 2017 | 54.4 | -15.7 | -22.4% | Sep 30, 2017 | |
| Q2 2017 | 57.5 | -19.6 | -25.4% | Jun 30, 2017 | |
| Q1 2017 | 61.6 | -15.5 | -20.2% | Mar 31, 2017 | |
| Q4 2016 | 64.8 | -12.9 | -16.6% | Dec 31, 2016 | |
| Q3 2016 | 70.1 | -8.16 | -10.4% | Sep 30, 2016 | |
| Q2 2016 | 77.1 | -1.03 | -1.32% | Jun 30, 2016 | |
| Q1 2016 | 77.1 | -5.51 | -6.67% | Mar 31, 2016 | |
| Q4 2015 | 77.6 | -9.68 | -11.1% | Dec 31, 2015 | |
| Q3 2015 | 78.3 | -10.9 | -12.2% | Sep 30, 2015 | |
| Q2 2015 | 78.1 | -14.5 | -15.6% | Jun 30, 2015 | |
| Q1 2015 | 82.6 | -14 | -14.4% | Mar 31, 2015 | |
| Q4 2014 | 87.3 | -12.8 | -12.8% | Dec 31, 2014 | |
| Q3 2014 | 89.2 | -14.4 | -13.9% | Sep 30, 2014 | |
| Q2 2014 | 92.6 | -17 | -15.5% | Jun 30, 2014 | |
| Q1 2014 | 96.6 | -17.8 | -15.6% | Mar 31, 2014 | |
| Q4 2013 | 100 | -9.94 | -9.03% | Dec 31, 2013 | |
| Q3 2013 | 104 | -1.58 | -1.5% | Sep 30, 2013 | |
| Q2 2013 | 110 | +13.8 | +14.4% | Jun 30, 2013 | |
| Q1 2013 | 114 | +26.7 | +30.4% | Mar 31, 2013 | |
| Q4 2012 | 110 | +23.1 | +26.6% | Dec 31, 2012 | |
| Q3 2012 | 105 | +15.3 | +17% | Sep 30, 2012 | |
| Q2 2012 | 95.8 | -0.58 | -0.6% | Jun 30, 2012 | |
| Q1 2012 | 87.7 | -15.1 | -14.7% | Mar 31, 2012 | |
| Q4 2011 | 86.9 | -22.7 | -20.7% | Dec 31, 2011 | |
| Q3 2011 | 89.9 | Sep 30, 2011 | |||
| Q2 2011 | 96.4 | Jun 30, 2011 | |||
| Q1 2011 | 103 | Mar 31, 2011 | |||
| Q4 2010 | 110 | Dec 31, 2010 |