| Year Planted | Age | Biomass density (Mg/ha) |
| 1990 | 27 | 132.03 |
| 1995 | 22 | 126.96 |
| 2000 | 17 | 77.97 |
| 2005 | 12 | 71.09 |
| 2010 | 7 | 92.07 |
| 2015 | 2 | 69.98 |