| Period | Value | YoY Chg | Change % | Start Date | End Date |
|---|---|---|---|---|---|
| Q1 2024 | 22.3 | -2.25 | -9.16% | Mar 31, 2024 | |
| Q4 2023 | 23 | -2.03 | -8.1% | Dec 31, 2023 | |
| Q3 2023 | 23.6 | -1.75 | -6.91% | Sep 30, 2023 | |
| Q2 2023 | 24 | -1.06 | -4.23% | Jun 30, 2023 | |
| Q1 2023 | 24.6 | +1.13 | +4.82% | Mar 31, 2023 | |
| Q4 2022 | 25.1 | +2.72 | +12.2% | Dec 31, 2022 | |
| Q3 2022 | 25.3 | +4.09 | +19.3% | Sep 30, 2022 | |
| Q2 2022 | 25 | +4.34 | +21% | Jun 30, 2022 | |
| Q1 2022 | 23.4 | +2.64 | +12.7% | Mar 31, 2022 | |
| Q4 2021 | 22.3 | +0.94 | +4.39% | Dec 31, 2021 | |
| Q3 2021 | 21.2 | -1.52 | -6.68% | Sep 30, 2021 | |
| Q2 2021 | 20.7 | -2.61 | -11.2% | Jun 30, 2021 | |
| Q1 2021 | 20.8 | -4 | -16.1% | Mar 31, 2021 | |
| Q4 2020 | 21.4 | -3.93 | -15.5% | Dec 31, 2020 | |
| Q3 2020 | 22.8 | -3.15 | -12.2% | Sep 30, 2020 | |
| Q2 2020 | 23.3 | -3.17 | -12% | Jun 30, 2020 | |
| Q1 2020 | 24.8 | -2.19 | -8.11% | Mar 31, 2020 | |
| Q4 2019 | 25.3 | -2.4 | -8.66% | Dec 31, 2019 | |
| Q3 2019 | 25.9 | -2.66 | -9.31% | Sep 30, 2019 | |
| Q2 2019 | 26.5 | -2.2 | -7.68% | Jun 30, 2019 | |
| Q1 2019 | 27 | -1.49 | -5.23% | Mar 31, 2019 | |
| Q4 2018 | 27.7 | -0.64 | -2.26% | Dec 31, 2018 | |
| Q3 2018 | 28.6 | +0.56 | +2% | Sep 30, 2018 | |
| Q2 2018 | 28.7 | +0.15 | +0.53% | Jun 30, 2018 | |
| Q1 2018 | 28.5 | -0.87 | -2.97% | Mar 31, 2018 | |
| Q4 2017 | 28.4 | -2.23 | -7.29% | Dec 31, 2017 | |
| Q3 2017 | 28 | -4.04 | -12.6% | Sep 30, 2017 | |
| Q2 2017 | 28.5 | -3.93 | -12.1% | Jun 30, 2017 | |
| Q1 2017 | 29.4 | -2.86 | -8.88% | Mar 31, 2017 | |
| Q4 2016 | 30.6 | -1.05 | -3.32% | Dec 31, 2016 | |
| Q3 2016 | 32.1 | +0.51 | +1.62% | Sep 30, 2016 | |
| Q2 2016 | 32.5 | +0.73 | +2.3% | Jun 30, 2016 | |
| Q1 2016 | 32.2 | -0.4 | -1.23% | Mar 31, 2016 | |
| Q4 2015 | 31.7 | -2.03 | -6.03% | Dec 31, 2015 | |
| Q3 2015 | 31.5 | -3.17 | -9.13% | Sep 30, 2015 | |
| Q2 2015 | 31.7 | -3.49 | -9.91% | Jun 30, 2015 | |
| Q1 2015 | 32.6 | -2.87 | -8.09% | Mar 31, 2015 | |
| Q4 2014 | 33.7 | -1.95 | -5.47% | Dec 31, 2014 | |
| Q3 2014 | 34.7 | -0.98 | -2.75% | Sep 30, 2014 | |
| Q2 2014 | 35.2 | -0.9 | -2.49% | Jun 30, 2014 | |
| Q1 2014 | 35.5 | -1.2 | -3.27% | Mar 31, 2014 | |
| Q4 2013 | 35.6 | -1.56 | -4.2% | Dec 31, 2013 | |
| Q3 2013 | 35.7 | -2.49 | -6.52% | Sep 30, 2013 | |
| Q2 2013 | 36.1 | -2.27 | -5.91% | Jun 30, 2013 | |
| Q1 2013 | 36.7 | -1.63 | -4.26% | Mar 31, 2013 | |
| Q4 2012 | 37.2 | -0.34 | -0.91% | Dec 31, 2012 | |
| Q3 2012 | 38.2 | +0.92 | +2.47% | Sep 30, 2012 | |
| Q2 2012 | 38.4 | +1.99 | +5.47% | Jun 30, 2012 | |
| Q1 2012 | 38.3 | +2.84 | +8.01% | Mar 31, 2012 | |
| Q4 2011 | 37.5 | +2.67 | +7.66% | Dec 31, 2011 | |
| Q3 2011 | 37.3 | Sep 30, 2011 | |||
| Q2 2011 | 36.4 | Jun 30, 2011 | |||
| Q1 2011 | 35.5 | Mar 31, 2011 | |||
| Q4 2010 | 34.9 | Dec 31, 2010 |