Mining of hard coal – Former territory of the Federal Republic – Local units – Survey units [WZ08-0510.DF.BETRIEBE.ERH001]
- min:
- 8
- max:
- 31
- avg:
- 16.643
- σ:
- 7.584
| Period | Value |
|---|
| 2005 | 31 |
| 2006 | 26 |
| 2007 | 24 |
| 2008 | 23 |
| 2009 | 23 |
| 2010 | 20 |
| 2011 | 19 |
| 2012 | 12 |
| 2013 | 10 |
| 2014 | 9 |
| 2015 | 10 |
| 2016 | 8 |
| 2017 | 9 |
| 2018 | 9 |