| Sold | Grade | Monthly Average |
| Mar 2023 | 4.0 | $11.50 |
| Aug 2019 | 4.0 | $17.00 |
| Jul 2015 | 3.5 | $5.70 |
| May 2016 | 3.0 | $5.00 |
| Feb 2010 | 3.0 | $5.80 |
| Apr 2019 | 2.5 | $4.70 |
| Sep 2017 | 2.5 | $4.30 |
| Jan 2023 | 2.0 | $4.80 |
| Nov 2017 | 2.0 | $3.60 |
| May 2017 | 2.0 | $3.60 |
| Oct 2021 | 1.8 | $4.80 |
| Nov 2014 | 1.8 | $2.25 |
| Dec 2011 | 1.8 | $3.60 |
| Jun 2011 | 1.8 | $3.60 |
| Aug 2010 | 1.8 | $4.00 |
| Aug 2022 | 1.5 | $3.30 |
| Feb 2014 | 1.5 | $1.80 |
| Apr 2013 | 1.5 | $3.10 |
| Jul 2019 | 1.0 | $3.00 |