| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q1 2023 | 54.9 | -6.56 | -10.7% | 31 Mar 2023 |
| Q4 2022 | 57.5 | -3.14 | -5.18% | 31 Dec 2022 |
| Q3 2022 | 59.2 | +0.59 | +1.01% | 30 Sep 2022 |
| Q2 2022 | 62 | +4.18 | +7.23% | 30 Jun 2022 |
| Q1 2022 | 61.5 | +5.26 | +9.36% | 31 Mar 2022 |
| Q4 2021 | 60.6 | +9.79 | +19.3% | 31 Dec 2021 |
| Q3 2021 | 58.6 | +6.72 | +12.9% | 30 Sep 2021 |
| Q2 2021 | 57.8 | +6.59 | +12.9% | 30 Jun 2021 |
| Q1 2021 | 56.2 | +2.97 | +5.58% | 31 Mar 2021 |
| Q4 2020 | 50.8 | -10.9 | -17.6% | 31 Dec 2020 |
| Q3 2020 | 51.9 | -12.4 | -19.3% | 30 Sep 2020 |
| Q2 2020 | 51.2 | -15.8 | -23.5% | 30 Jun 2020 |
| Q1 2020 | 53.3 | -14.9 | -21.9% | 31 Mar 2020 |
| Q4 2019 | 61.7 | -4.86 | -7.3% | 31 Dec 2019 |
| Q3 2019 | 64.3 | +0.06 | +0.09% | 30 Sep 2019 |
| Q2 2019 | 67 | +2.62 | +4.07% | 30 Jun 2019 |
| Q1 2019 | 68.2 | +2.51 | +3.82% | 31 Mar 2019 |
| Q4 2018 | 66.6 | -0.84 | -1.25% | 31 Dec 2018 |
| Q3 2018 | 64.2 | -4.59 | -6.67% | 30 Sep 2018 |
| Q2 2018 | 64.3 | -2.97 | -4.41% | 30 Jun 2018 |
| Q1 2018 | 65.7 | +0.96 | +1.48% | 31 Mar 2018 |
| Q4 2017 | 67.4 | +4.64 | +7.39% | 31 Dec 2017 |
| Q3 2017 | 68.8 | +8.82 | +14.7% | 30 Sep 2017 |
| Q2 2017 | 67.3 | +8.74 | +14.9% | 30 Jun 2017 |
| Q1 2017 | 64.7 | +7.3 | +12.7% | 31 Mar 2017 |
| Q4 2016 | 62.8 | +6.79 | +12.1% | 31 Dec 2016 |
| Q3 2016 | 60 | +3.53 | +6.25% | 30 Sep 2016 |
| Q2 2016 | 58.6 | +2.79 | +5% | 30 Jun 2016 |
| Q1 2016 | 57.4 | +0.83 | +1.47% | 31 Mar 2016 |
| Q4 2015 | 56 | -2.05 | -3.53% | 31 Dec 2015 |
| Q3 2015 | 56.5 | -2.3 | -3.91% | 30 Sep 2015 |
| Q2 2015 | 55.8 | -5.26 | -8.62% | 30 Jun 2015 |
| Q1 2015 | 56.6 | -5.89 | -9.43% | 31 Mar 2015 |
| Q4 2014 | 58 | -6.97 | -10.7% | 31 Dec 2014 |
| Q3 2014 | 58.8 | -7.36 | -11.1% | 30 Sep 2014 |
| Q2 2014 | 61 | -8.66 | -12.4% | 30 Jun 2014 |
| Q1 2014 | 62.5 | -9.68 | -13.4% | 31 Mar 2014 |
| Q4 2013 | 65 | -7.51 | -10.4% | 31 Dec 2013 |
| Q3 2013 | 66.1 | -5.84 | -8.11% | 30 Sep 2013 |
| Q2 2013 | 69.7 | +0.54 | +0.78% | 30 Jun 2013 |
| Q1 2013 | 72.1 | +6.8 | +10.4% | 31 Mar 2013 |
| Q4 2012 | 72.5 | 31 Dec 2012 | ||
| Q3 2012 | 72 | 30 Sep 2012 | ||
| Q2 2012 | 69.2 | 30 Jun 2012 | ||
| Q1 2012 | 65.3 | 31 Mar 2012 |