5   Drainage and fertilizing of forest area1. 1990-1999
  Drainage Area drained,
new ditches
Area fertilized
  New ditches Cleaning of ditches
and supplementary ditching
Mineral soil Boggy land
  Km Kmē
1990 1 811 681 35 12 14
1991 1 716 862 30 27 13
1992 1 233 554 22 21 20
1993 908 451 17 15 13
1994 683 486 13 14 13
1995 413 408 8 14 13
1996 339 361 8 21 9
19972 271 317 5 18 5
19982,3 323 364 7 20 6
19992,4 311 268 6 18 8
1  The figures only comprise work financed with forest trust fund or government subsidies.
2  Figures are preliminary.
3  Figures for Finnmark are missing.
4  Figures for Troms are missing.

Explanation of symbols