Mining of coal and lignite – Former territory of the Federal Republic – Local kind-of-activity units – Survey units [WZ08-05.DF.BETRIEBSTEILE.ERH001]
- min:
- 7
- max:
- 31
- avg:
- 18.417
- σ:
- 7.135
| Period | Value |
|---|
| 2009 | 31 |
| 2010 | 28 |
| 2011 | 27 |
| 2012 | 20 |
| 2013 | 18 |
| 2014 | 18 |
| 2015 | 18 |
| 2016 | 16 |
| 2017 | 16 |
| 2018 | 15 |
| 2019 | 7 |
| 2020 | 7 |