| Detached houses of wood |  |  | 
 | Detached houses of wood, total | 153.5 | 158.0 | 
 | Detached houses of wood, total, materials | 152.9 | 157.5 | 
 |  |  |  | 
 | Stone, clay and cement work | 155.3 | 159.8 | 
 | Stone, clay and cement work, materials | 160.2 | 165.7 | 
 |  |  |  | 
 | Site preparation | 151.9 | 155.5 | 
 | Site preparation, materials | 153.2 | 156.2 | 
 |  |  |  | 
 | Other work | 153.3 | 157.9 | 
 | Other work, materials | 151.8 | 156.3 | 
 |  |  |  | 
 | Carpentering | 148.1 | 152.0 | 
 | Carpentering, materials | 143.2 | 146.5 | 
 |  |  |  | 
 | Painting, paperhanging and floor coating | 142.5 | 147.6 | 
 | Painting, paperhanging and floor coating, materials | 130.6 | 135.8 | 
 |  |  |  | 
 | Plumbing | 173.3 | 178.7 | 
 | Plumbing, materials | 188.9 | 196.3 | 
 |  |  |  | 
 | Electrician installation work | 207.4 | 219.1 | 
 | Electrician installation work, materials | 271.8 | 294.0 | 
 |  |  |  | 
 | Multi-dwelling houses |  |  | 
 | Multi-dwelling houses, total | 154.9 | 158.7 | 
 | Multi-dwelling houses, total, materials | 160.7 | 165.2 | 
 |  |  |  | 
 | Site preparation | 151.6 | 155.0 | 
 | Site preparation, materials | 158.5 | 160.1 | 
 |  |  |  | 
 | Carpentering | 147.5 | 151.0 | 
 | Carpentering, materials | 141.6 | 144.4 | 
 |  |  |  | 
 | Painting, paperhanging and floor coating | 147.0 | 152.0 | 
 | Painting, paperhanging and floor coating, materials | 135.5 | 140.9 | 
 |  |  |  | 
 | Plumbing | 177.7 | 181.3 | 
 | Plumbing, materials | 195.8 | 199.9 | 
 |  |  |  | 
 | Electrician installation work | 200.5 | 210.5 | 
 | Electrician installation work, materials | 270.3 | 290.6 | 
 |  |