| Sold | Grade | Monthly Average |
| Jan 2018 | 9.4 | $31.95 |
| Jul 2017 | 9.4 | $31.95 |
| May 2017 | 9.4 | $44.00 |
| Dec 2016 | 9.4 | $31.95 |
| Aug 2016 | 9.4 | $43.00 |
| Sep 2015 | 9.4 | $36.50 |
| Jan 2015 | 9.4 | $36.50 |
| May 2014 | 9.4 | $29.95 |
| Mar 2014 | 9.4 | $29.95 |
| Jan 2014 | 9.4 | $33.50 |
| Dec 2013 | 9.4 | $33.50 |
| Oct 2013 | 9.4 | $29.95 |
| Sep 2013 | 9.4 | $26.96 |
| Aug 2012 | 9.4 | $35.65 |
| Dec 2021 | 8.0 | $55.00 |