| Sold | Grade | Monthly Average |
| May 2023 | 6.0 | $13.00 |
| Feb 2018 | 5.5 | $11.75 |
| Apr 2014 | 5.5 | $9.60 |
| Apr 2013 | 5.5 | $8.46 |
| May 2011 | 5.5 | $8.90 |
| Mar 2018 | 5.0 | $10.50 |
| Aug 2025 | 4.0 | $8.36 |
| Apr 2022 | 4.0 | $8.80 |
| Nov 2021 | 4.0 | $8.80 |
| Feb 2020 | 4.0 | $8.36 |
| Jul 2020 | 3.5 | $7.60 |
| May 2025 | 2.5 | $5.70 |
| Feb 2018 | 2.5 | $5.70 |
| Aug 2023 | 2.0 | $4.80 |
| Jun 2022 | 2.0 | $4.80 |
| Apr 2019 | 2.0 | $4.56 |
| Oct 2018 | 2.0 | $4.80 |
| Sep 2016 | 2.0 | $4.80 |
| Apr 2014 | 2.0 | $5.13 |
| Mar 2020 | 1.5 | $3.42 |
| May 2015 | 1.0 | $3.15 |