| Sold | Grade | Monthly Average |
| May 2016 | 4.0 | $27.00 |
| Jan 2016 | 4.0 | $19.75 |
| Sep 2017 | 3.5 | $15.53 |
| Feb 2014 | 3.0 | $13.25 |
| May 2012 | 3.0 | $13.25 |
| Mar 2019 | 2.5 | $17.50 |
| Aug 2017 | 2.5 | $12.75 |
| Dec 2024 | 2.0 | $13.50 |
| Apr 2023 | 2.0 | $12.15 |
| Jul 2022 | 2.0 | $13.50 |
| Feb 2022 | 2.0 | $13.50 |
| Sep 2013 | 2.0 | $9.60 |
| Feb 2012 | 2.0 | $9.60 |
| Feb 2010 | 2.0 | $9.60 |
| Apr 2018 | 1.5 | $9.40 |