| Sold | Grade | Monthly Average |
| Jun 2026 | 6.5 | $7.80 |
| Jun 2013 | 8.0 | $5.20 |
| May 2013 | 8.0 | $5.70 |
| May 2012 | 8.0 | $5.60 |
| Mar 2012 | 8.0 | $4.80 |
| Feb 2012 | 8.0 | $4.40 |
| Aug 2011 | 8.0 | $3.80 |
| Jan 2011 | 8.0 | $4.40 |
| Dec 2009 | 8.0 | $3.20 |
| Nov 2019 | 7.0 | $6.30 |
| Jul 2018 | 7.0 | $15.00 |
| Oct 2022 | 6.0 | $6.00 |
| Nov 2021 | 6.0 | $5.40 |
| Jan 2018 | 6.0 | $4.80 |
| Nov 2016 | 6.0 | $5.10 |
| Aug 2014 | 6.0 | $5.40 |
| May 2011 | 6.0 | $3.60 |
| Jun 2019 | 5.5 | $5.49 |
| May 2019 | 5.5 | $5.49 |
| Apr 2023 | 2.0 | $2.50 |