Table

	March 2016	March 2017	Change from previous year (per cent)	Weight pr cent
Plumbing costs total	201.0	206.8	2.9	100,0
Administrative expenses	167.8	172.8	3.0	17,3
Labour costs	179.1	183.5	2.5	26,0
Materials	221.6	228.2	3.0	55,3

Sanitary installations	199.6	205.1	2.8	54,5
Administrative expenses	167.8	172.8	3.0	8,4
Labour cost	179.1	183.5	2.5	12,4
Materials	215.8	221.7	2.7	32,7

Heating installations	202.7	208.8	3.0	45,5
Administrative expenses	167.8	172.8	3.0	8,9
Labour cost	179.1	183.5	2.5	13,4
Materials	229.9	237.5	3.3	22,6