| Period | Value | YoY Chg | Change % | Start Date | End Date |
|---|---|---|---|---|---|
| Q1 2024 | 66.9 | -8.59 | -11.4% | Mar 31, 2024 | |
| Q4 2023 | 67 | -9.94 | -12.9% | Dec 31, 2023 | |
| Q3 2023 | 67.9 | -12.8 | -15.8% | Sep 30, 2023 | |
| Q2 2023 | 72.1 | -6.69 | -8.5% | Jun 30, 2023 | |
| Q1 2023 | 75.5 | -2.13 | -2.75% | Mar 31, 2023 | |
| Q4 2022 | 77 | -2.39 | -3.01% | Dec 31, 2022 | |
| Q3 2022 | 80.7 | +2.53 | +3.24% | Sep 30, 2022 | |
| Q2 2022 | 78.7 | +1.47 | +1.9% | Jun 30, 2022 | |
| Q1 2022 | 77.6 | +0.94 | +1.23% | Mar 31, 2022 | |
| Q4 2021 | 79.4 | +4.19 | +5.57% | Dec 31, 2021 | |
| Q3 2021 | 78.2 | +3.18 | +4.24% | Sep 30, 2021 | |
| Q2 2021 | 77.3 | -0.01 | -0.01% | Jun 30, 2021 | |
| Q1 2021 | 76.7 | -1.28 | -1.64% | Mar 31, 2021 | |
| Q4 2020 | 75.2 | -3.12 | -3.99% | Dec 31, 2020 | |
| Q3 2020 | 75 | -1.21 | -1.59% | Sep 30, 2020 | |
| Q2 2020 | 77.3 | +4.41 | +6.05% | Jun 30, 2020 | |
| Q1 2020 | 78 | +8.25 | +11.8% | Mar 31, 2020 | |
| Q4 2019 | 78.3 | +15.1 | +23.9% | Dec 31, 2019 | |
| Q3 2019 | 76.2 | +10.9 | +16.7% | Sep 30, 2019 | |
| Q2 2019 | 72.9 | +6.65 | +10% | Jun 30, 2019 | |
| Q1 2019 | 69.7 | +4.36 | +6.67% | Mar 31, 2019 | |
| Q4 2018 | 63.2 | -9.73 | -13.3% | Dec 31, 2018 | |
| Q3 2018 | 65.3 | -6.12 | -8.57% | Sep 30, 2018 | |
| Q2 2018 | 66.2 | -3.59 | -5.14% | Jun 30, 2018 | |
| Q1 2018 | 65.3 | -1.83 | -2.73% | Mar 31, 2018 | |
| Q4 2017 | 72.9 | +12.2 | +20% | Dec 31, 2017 | |
| Q3 2017 | 71.4 | +15.2 | +27% | Sep 30, 2017 | |
| Q2 2017 | 69.8 | +18.8 | +36.9% | Jun 30, 2017 | |
| Q1 2017 | 67.2 | +19.3 | +40.2% | Mar 31, 2017 | |
| Q4 2016 | 60.8 | +15.8 | +35.2% | Dec 31, 2016 | |
| Q3 2016 | 56.2 | +14.4 | +34.4% | Sep 30, 2016 | |
| Q2 2016 | 51 | +10.9 | +27.1% | Jun 30, 2016 | |
| Q1 2016 | 47.9 | +7.97 | +20% | Mar 31, 2016 | |
| Q4 2015 | 45 | +5.19 | +13.1% | Dec 31, 2015 | |
| Q3 2015 | 41.8 | -1.84 | -4.21% | Sep 30, 2015 | |
| Q2 2015 | 40.1 | -8.13 | -16.9% | Jun 30, 2015 | |
| Q1 2015 | 39.9 | -14 | -26% | Mar 31, 2015 | |
| Q4 2014 | 39.8 | -23 | -36.6% | Dec 31, 2014 | |
| Q3 2014 | 43.7 | -23.2 | -34.7% | Sep 30, 2014 | |
| Q2 2014 | 48.3 | -24.3 | -33.5% | Jun 30, 2014 | |
| Q1 2014 | 53.9 | -23 | -29.9% | Mar 31, 2014 | |
| Q4 2013 | 62.7 | -17.2 | -21.5% | Dec 31, 2013 | |
| Q3 2013 | 66.9 | -13.8 | -17.1% | Sep 30, 2013 | |
| Q2 2013 | 72.6 | -7.97 | -9.9% | Jun 30, 2013 | |
| Q1 2013 | 76.9 | -2.14 | -2.71% | Mar 31, 2013 | |
| Q4 2012 | 79.9 | +2.79 | +3.62% | Dec 31, 2012 | |
| Q3 2012 | 80.7 | +4.22 | +5.52% | Sep 30, 2012 | |
| Q2 2012 | 80.5 | +6.41 | +8.65% | Jun 30, 2012 | |
| Q1 2012 | 79.1 | +6.42 | +8.84% | Mar 31, 2012 | |
| Q4 2011 | 77.1 | +6.72 | +9.54% | Dec 31, 2011 | |
| Q3 2011 | 76.4 | Sep 30, 2011 | |||
| Q2 2011 | 74.1 | Jun 30, 2011 | |||
| Q1 2011 | 72.7 | Mar 31, 2011 | |||
| Q4 2010 | 70.4 | Dec 31, 2010 |