| Period | Value | YoY Chg | Change % | Date |
|---|---|---|---|---|
| Q3 2025 | 23 | +1 | +2.6% | 30 Sep 2025 |
| Q2 2025 | 22 | +0 | +0.18% | 30 Jun 2025 |
| Q1 2025 | 22 | -0 | -1.7% | 31 Mar 2025 |
| Q4 2024 | 22 | -1 | -3.9% | 31 Dec 2024 |
| Q3 2024 | 22 | -1 | -3.7% | 30 Sep 2024 |
| Q2 2024 | 22 | -1 | -3.2% | 30 Jun 2024 |
| Q1 2024 | 22 | -0 | -1.8% | 31 Mar 2024 |
| Q4 2023 | 23 | -1 | -2.8% | 31 Dec 2023 |
| Q3 2023 | 23 | -1 | -4.2% | 30 Sep 2023 |
| Q2 2023 | 23 | -1 | -3.4% | 30 Jun 2023 |
| Q1 2023 | 23 | -3 | -11.9% | 31 Mar 2023 |
| Q4 2022 | 23 | -2 | -8.2% | 31 Dec 2022 |
| Q3 2022 | 24 | +0 | +0.95% | 30 Sep 2022 |
| Q2 2022 | 24 | +1 | +2.7% | 30 Jun 2022 |
| Q1 2022 | 26 | +5 | +22.2% | 31 Mar 2022 |
| Q4 2021 | 25 | +5 | +22.7% | 31 Dec 2021 |
| Q3 2021 | 24 | +4 | +18% | 30 Sep 2021 |
| Q2 2021 | 23 | +4 | +18.7% | 30 Jun 2021 |
| Q1 2021 | 21 | +3 | +14.6% | 31 Mar 2021 |
| Q4 2020 | 21 | +2 | +10.3% | 31 Dec 2020 |
| Q3 2020 | 20 | +2 | +9.4% | 30 Sep 2020 |
| Q2 2020 | 20 | +2 | +10.5% | 30 Jun 2020 |
| Q1 2020 | 18 | +2 | +9.8% | 31 Mar 2020 |
| Q4 2019 | 19 | +3 | +18.3% | 31 Dec 2019 |
| Q3 2019 | 18 | +3 | +17.7% | 30 Sep 2019 |
| Q2 2019 | 18 | +3 | +18.6% | 30 Jun 2019 |
| Q1 2019 | 17 | +3 | +18.3% | 31 Mar 2019 |
| Q4 2018 | 16 | +1 | +10.1% | 31 Dec 2018 |
| Q3 2018 | 15 | +2 | +11% | 30 Sep 2018 |
| Q2 2018 | 15 | +1 | +7% | 30 Jun 2018 |
| Q1 2018 | 14 | +1 | +5.5% | 31 Mar 2018 |
| Q4 2017 | 14 | +2 | +13.2% | 31 Dec 2017 |
| Q3 2017 | 14 | +2 | +17.9% | 30 Sep 2017 |
| Q2 2017 | 14 | +3 | +25.8% | 30 Jun 2017 |
| Q1 2017 | 13 | +3 | +32.8% | 31 Mar 2017 |
| Q4 2016 | 13 | +1 | +7.5% | 31 Dec 2016 |
| Q3 2016 | 12 | +1 | +8.7% | 30 Sep 2016 |
| Q2 2016 | 11 | +1 | +6.4% | 30 Jun 2016 |
| Q1 2016 | 10 | +0 | +1.8% | 31 Mar 2016 |
| Q4 2015 | 12 | +4 | +57.2% | 31 Dec 2015 |
| Q3 2015 | 11 | +3 | +45.1% | 30 Sep 2015 |
| Q2 2015 | 10 | +2 | +29.5% | 30 Jun 2015 |
| Q1 2015 | 10 | +1 | +11.9% | 31 Mar 2015 |
| Q4 2014 | 7 | -2 | -23.7% | 31 Dec 2014 |
| Q3 2014 | 7 | -4 | -32.7% | 30 Sep 2014 |
| Q2 2014 | 8 | -4 | -29.9% | 30 Jun 2014 |
| Q1 2014 | 9 | -3 | -24% | 31 Mar 2014 |
| Q4 2013 | 10 | -2 | -16.4% | 31 Dec 2013 |
| Q3 2013 | 11 | -1 | -7% | 30 Sep 2013 |
| Q2 2013 | 11 | -1 | -10% | 30 Jun 2013 |
| Q1 2013 | 12 | -1 | -9.8% | 31 Mar 2013 |
| Q4 2012 | 12 | -1 | -10.1% | 31 Dec 2012 |
| Q3 2012 | 12 | -1 | -8.4% | 30 Sep 2012 |
| Q2 2012 | 13 | 30 Jun 2012 | ||
| Q1 2012 | 13 | 31 Mar 2012 | ||
| Q4 2011 | 13 | 31 Dec 2011 | ||
| Q3 2011 | 13 | 30 Sep 2011 |