| Sold | Grade | Monthly Average |
| Mar 2014 | 6.5 | $7.20 |
| May 2018 | 6.0 | $6.50 |
| Apr 2019 | 4.5 | $4.40 |
| Jul 2021 | 4.0 | $11.00 |
| Sep 2020 | 4.0 | $11.00 |
| Aug 2019 | 3.0 | $7.70 |
| Nov 2015 | 3.0 | $2.50 |
| Oct 2020 | 2.0 | $5.49 |
| Mar 2020 | 2.0 | $5.49 |
| May 2012 | 2.0 | $1.90 |
| Jul 2011 | 2.0 | $1.60 |
| Mar 2011 | 2.0 | $1.60 |
| May 2010 | 2.0 | $1.49 |
| Dec 2024 | 1.8 | $4.40 |
| May 2024 | 1.8 | $4.40 |
| Jun 2015 | 1.5 | $1.35 |
| May 2015 | 1.0 | $1.20 |