| Period | Value | YoY Chg | Change % | Start Date | End Date |
|---|---|---|---|---|---|
| Q3 2025 | 9.49 | +0.09 | +0.96% | Jun 1, 2025 | Aug 31, 2025 |
| Q2 2025 | 9.93 | +0.96 | +10.7% | Mar 1, 2025 | May 31, 2025 |
| Q1 2025 | 9.7 | +1.23 | +14.5% | Dec 1, 2024 | Feb 28, 2025 |
| Q4 2024 | 9.93 | +2.05 | +26% | Sep 1, 2024 | Nov 30, 2024 |
| Q3 2024 | 9.41 | +1.83 | +24.1% | Jun 1, 2024 | Aug 31, 2024 |
| Q2 2024 | 8.98 | +1.9 | +26.8% | Mar 1, 2024 | May 31, 2024 |
| Q1 2024 | 8.47 | +0.66 | +8.46% | Dec 1, 2023 | Feb 29, 2024 |
| Q4 2023 | 7.88 | -0.1 | -1.25% | Sep 1, 2023 | Nov 30, 2023 |
| Q3 2023 | 7.58 | -0.48 | -5.96% | Jun 1, 2023 | Aug 31, 2023 |
| Q2 2023 | 7.08 | -0.64 | -8.29% | Mar 1, 2023 | May 31, 2023 |
| Q1 2023 | 7.81 | +0.63 | +8.78% | Dec 1, 2022 | Feb 28, 2023 |
| Q4 2022 | 7.98 | +0.56 | +7.55% | Sep 1, 2022 | Nov 30, 2022 |
| Q3 2022 | 8.06 | +0.45 | +5.91% | Jun 1, 2022 | Aug 31, 2022 |
| Q2 2022 | 7.72 | -0.82 | -9.6% | Mar 1, 2022 | May 31, 2022 |
| Q1 2022 | 7.18 | -0.78 | -9.8% | Dec 1, 2021 | Feb 28, 2022 |
| Q4 2021 | 7.42 | -0.15 | -1.98% | Sep 1, 2021 | Nov 30, 2021 |
| Q3 2021 | 7.61 | +0.87 | +12.9% | Jun 1, 2021 | Aug 31, 2021 |
| Q2 2021 | 8.54 | +3.1 | +57% | Mar 1, 2021 | May 31, 2021 |
| Q1 2021 | 7.96 | +2.04 | +34.4% | Dec 1, 2020 | Feb 28, 2021 |
| Q4 2020 | 7.57 | +1.51 | +24.9% | Sep 1, 2020 | Nov 30, 2020 |
| Q3 2020 | 6.74 | +1.1 | +19.5% | Jun 1, 2020 | Aug 31, 2020 |
| Q2 2020 | 5.44 | +0.39 | +7.73% | Mar 1, 2020 | May 31, 2020 |
| Q1 2020 | 5.92 | +1.74 | +41.7% | Dec 1, 2019 | Feb 29, 2020 |
| Q4 2019 | 6.06 | +1.37 | +29.2% | Sep 1, 2019 | Nov 30, 2019 |
| Q3 2019 | 5.64 | +0.03 | +0.54% | Jun 1, 2019 | Aug 31, 2019 |
| Q2 2019 | 5.05 | -1.49 | -22.8% | Mar 1, 2019 | May 31, 2019 |
| Q1 2019 | 4.18 | -3.25 | -43.8% | Dec 1, 2018 | Feb 28, 2019 |
| Q4 2018 | 4.69 | -2.32 | -33.1% | Sep 1, 2018 | Nov 30, 2018 |
| Q3 2018 | 5.6 | +1.8 | +47.3% | Jun 1, 2018 | Aug 31, 2018 |
| Q2 2018 | 6.54 | +2.73 | +71.7% | Mar 1, 2018 | May 31, 2018 |
| Q1 2018 | 7.42 | +3.02 | +68.6% | Dec 1, 2017 | Feb 28, 2018 |
| Q4 2017 | 7.01 | +2.39 | +51.8% | Sep 1, 2017 | Nov 30, 2017 |
| Q3 2017 | 3.81 | -4.16 | -52.2% | Jun 1, 2017 | Aug 31, 2017 |
| Q2 2017 | 3.81 | -3.91 | -50.7% | Mar 1, 2017 | May 31, 2017 |
| Q1 2017 | 4.4 | -2.8 | -38.9% | Dec 1, 2016 | Feb 28, 2017 |
| Q4 2016 | 4.62 | -0.89 | -16.2% | Sep 1, 2016 | Nov 30, 2016 |
| Q3 2016 | 7.97 | +2.66 | +50.1% | Jun 1, 2016 | Aug 31, 2016 |
| Q2 2016 | 7.71 | +2.33 | +43.3% | Mar 1, 2016 | May 31, 2016 |
| Q1 2016 | 7.21 | +2.17 | +43.1% | Dec 1, 2015 | Feb 29, 2016 |
| Q4 2015 | 5.51 | -1.42 | -20.5% | Sep 1, 2015 | Nov 30, 2015 |
| Q3 2015 | 5.31 | -1.53 | -22.4% | Jun 1, 2015 | Aug 31, 2015 |
| Q2 2015 | 5.38 | -1.67 | -23.7% | Mar 1, 2015 | May 31, 2015 |
| Q1 2015 | 5.04 | -1.06 | -17.4% | Dec 1, 2014 | Feb 28, 2015 |
| Q4 2014 | 6.93 | +1.8 | +35.1% | Sep 1, 2014 | Nov 30, 2014 |
| Q3 2014 | 6.84 | +2.48 | +57% | Jun 1, 2014 | Aug 31, 2014 |
| Q2 2014 | 7.05 | +4.54 | +181% | Mar 1, 2014 | May 31, 2014 |
| Q1 2014 | 6.1 | +3.04 | +99.3% | Dec 1, 2013 | Feb 28, 2014 |
| Q4 2013 | 5.13 | +1.12 | +27.9% | Sep 1, 2013 | Nov 30, 2013 |
| Q3 2013 | 4.35 | -0.36 | -7.65% | Jun 1, 2013 | Aug 31, 2013 |
| Q2 2013 | 2.51 | -3.69 | -59.5% | Mar 1, 2013 | May 31, 2013 |
| Q1 2013 | 3.06 | -2.81 | -47.9% | Dec 1, 2012 | Feb 28, 2013 |
| Q4 2012 | 4.01 | -1.8 | -31% | Sep 1, 2012 | Nov 30, 2012 |
| Q3 2012 | 4.71 | -1.21 | -20.4% | Jun 1, 2012 | Aug 31, 2012 |
| Q2 2012 | 6.2 | +0.32 | +5.44% | Mar 1, 2012 | May 31, 2012 |
| Q1 2012 | 5.87 | Dec 1, 2011 | Feb 29, 2012 | ||
| Q4 2011 | 5.82 | Sep 1, 2011 | Nov 30, 2011 | ||
| Q3 2011 | 5.92 | Jun 1, 2011 | Aug 31, 2011 | ||
| Q2 2011 | 5.89 | Mar 1, 2011 | May 31, 2011 |
| Period | Value | YoY Chg | Change % | Start Date | End Date |
|---|---|---|---|---|---|
| 2024 | 10.5 | +1.8 | +20.7% | Jun 1, 2024 | May 31, 2025 |
| 2023 | 8.7 | +1.18 | +15.7% | Jun 1, 2023 | May 31, 2024 |
| 2022 | 7.52 | -0.83 | -9.93% | Jun 1, 2022 | May 31, 2023 |
| 2021 | 8.35 | -0.63 | -7.01% | Jun 1, 2021 | May 31, 2022 |
| 2020 | 8.99 | +3.22 | +55.9% | Jun 1, 2020 | May 31, 2021 |
| 2019 | 5.76 | +0.6 | +11.6% | Jun 1, 2019 | May 31, 2020 |
| 2018 | 5.16 | -1.91 | -27% | Jun 1, 2018 | May 31, 2019 |
| 2017 | 7.07 | +3.12 | +78.9% | Jun 1, 2017 | May 31, 2018 |
| 2016 | 3.95 | -4.02 | -50.4% | Jun 1, 2016 | May 31, 2017 |
| 2015 | 7.97 | +2.18 | +37.7% | Jun 1, 2015 | May 31, 2016 |
| 2014 | 5.79 | -1.64 | -22.1% | Jun 1, 2014 | May 31, 2015 |
| 2013 | 7.43 | +4.6 | +162% | Jun 1, 2013 | May 31, 2014 |
| 2012 | 2.83 | -3.89 | -57.9% | Jun 1, 2012 | May 31, 2013 |
| 2011 | 6.72 | Jun 1, 2011 | May 31, 2012 |