| Sold | Grade | Monthly Average |
| Dec 2024 | 9.4 | $30.00 |
| Dec 2020 | 9.4 | $84.00 |
| Jan 2012 | 9.4 | $42.40 |
| Dec 2014 | 9.2 | $33.78 |
| May 2024 | 9.0 | $26.00 |
| Apr 2023 | 8.5 | $50.00 |
| Jul 2023 | 8.0 | $49.00 |
| Apr 2021 | 8.0 | $60.00 |
| Jun 2015 | 8.0 | $49.50 |
| Dec 2020 | 6.0 | $45.00 |
| Nov 2021 | 5.5 | $39.00 |
| Dec 2012 | 4.0 | $16.00 |
| Sep 2011 | 4.0 | $16.00 |