| Natura Loegstoer | |||||||
| Density (kg/m^2) | Lower | Upper | Total (tons) | Lower | Upper | Density[Density>1] (kg/m^2) | |
| 2006 | 0.01 | 0.01 | 0.02 | 3892 | 2709 | 5075 | NaN |
| 2007 | 0.09 | 0.07 | 0.11 | 27310 | 21334 | 33285 | 1.17 |
| 2008 | 0.19 | 0.15 | 0.22 | 58477 | 46204 | 70751 | 1.26 |
| 2009 | 0.66 | 0.55 | 0.78 | 209340 | 172672 | 246008 | 1.49 |
| 2010 | 0.38 | 0.31 | 0.45 | 121137 | 99191 | 143084 | 1.32 |
| 2011 | 0.44 | 0.36 | 0.52 | 139298 | 113454 | 165142 | 1.70 |
| 2012 | 0.13 | 0.10 | 0.16 | 41553 | 31281 | 51825 | 1.38 |
| 2013 | 0.04 | 0.03 | 0.04 | 11030 | 8387 | 13674 | 1.92 |
| 2014 | 0.01 | 0.01 | 0.02 | 4646 | 3482 | 5810 | NaN |
| 2015 | 0.05 | 0.03 | 0.06 | 15150 | 11019 | 19281 | 3.02 |
| 2016 | 0.08 | 0.07 | 0.10 | 25412 | 20479 | 30346 | 1.94 |
| 2017 | 0.13 | 0.11 | 0.16 | 41324 | 33198 | 49450 | 1.35 |
| 2018 | 0.06 | 0.05 | 0.07 | 18550 | 14769 | 22330 | NaN |
| 2019 | 0.05 | 0.04 | 0.06 | 14330 | 11238 | 17421 | NaN |
| 2020 | 0.09 | 0.07 | 0.11 | 28462 | 22518 | 34405 | 1.18 |
| 2021 | 0.10 | 0.08 | 0.13 | 33043 | 26160 | 39926 | 1.25 |
| 2022 | 0.11 | 0.08 | 0.13 | 33525 | 25576 | 41473 | 1.29 |
| 2023 | 0.06 | 0.05 | 0.08 | 19585 | 15085 | 24085 | 1.12 |