| 1995 | 1998 | 1999 | 2000 | 2001 | 2002 | |
| Total number | 2 968 | 2 923 | 2 851 | 2 829 | 2 639 | 2 476 |
| by source of power | ||||||
| electric | 1 097 | 1 073 | 1 051 | 1 029 | 980 | 940 |
| diesel | 1 855 | 1 831 | 1 780 | 1 778 | 1 636 | 1 510 |
| steam | 16 | 19 | 20 | 22 | 23 | 26 |
| Tractive power total (in thous. kW) | 4 521 | 4 066 | 3 977 | 3 894 | 3 626 | 3 292 |
| by source of power | ||||||
| electric | 2 803 | 2 390 | 2 339 | 2 292 | 2 169 | 2 063 |
| diesel | 1 705 | 1 661 | 1 623 | 1 585 | 1 439 | 1 213 |
| steam | 13 | 15 | 15 | 17 | 17 | 17 |
| Source: MD's transport statistics | ||||||
