| Sold | Grade | Monthly Average |
| Jul 2013 | 4.5 | $63.00 |
| Sep 2023 | 4.0 | $34.00 |
| Aug 2023 | 4.0 | $59.00 |
| Mar 2019 | 4.0 | $49.00 |
| May 2016 | 4.0 | $60.00 |
| Apr 2019 | 3.5 | $50.00 |
| Jan 2010 | 3.5 | $57.00 |
| Feb 2018 | 3.0 | $20.55 |
| Aug 2023 | 2.5 | $39.00 |
| Jun 2017 | 2.5 | $32.00 |
| Dec 2022 | 2.0 | $35.00 |
| Jun 2018 | 2.0 | $27.50 |
| Dec 2016 | 2.0 | $27.00 |
| May 2015 | 2.0 | $29.00 |
| Aug 2020 | 1.8 | $33.00 |
| Dec 2009 | 1.5 | $24.23 |
| Jun 2015 | 1.0 | $14.25 |
| May 2012 | 1.0 | $17.10 |
| May 2021 | 0.5 | $7.80 |