Former territory of the Federal Republic – Local units – Mining and agglomeration of hard coal – Survey units [DF.BETRIEBE.WZ-101.ERH001]
- min:
- 24
- max:
- 59
- avg:
- 42.714
- σ:
- 11.404
| Period | Value |
|---|
| 1995 | 59 |
| 1996 | 58 |
| 1997 | 56 |
| 1998 | 51 |
| 1999 | 48 |
| 2000 | 46 |
| 2001 | 47 |
| 2002 | 43 |
| 2003 | 41 |
| 2004 | 39 |
| 2005 | 35 |
| 2006 | 26 |
| 2007 | 25 |
| 2008 | 24 |