| Less than 30cm (1 foot) of shelf space: 51 (1.2%) |  |
| 30-90cm (1-3 feet) of shelf space: 103 (2.5%) | |
| 90-180cm (3-6 feet) of shelf space: 207 (5.0%) | |
| 1.8-3m (6-10 feet) of shelf space: 277 (6.7%) | |
| 3-6m (10-20 feet) of shelf space: 478 (11.5%) | |
| 6-9m (20-30 feet) of shelf space: 491 (11.8%) | |
| 9-12m (30-40 feet) of shelf space: 429 (10.3%) | |
| 12-15m (40-50 feet) of shelf space: 340 (8.2%) | |
| 15-21m (50-70 feet) of shelf space: 364 (8.8%) | |
| 21-30m (70-100 feet) of shelf space: 407 (9.8%) | |
| 30-45m (100-150 feet) of shelf space: 272 (6.6%) | |
| 45-60m (150-200 feet) of shelf space: 152 (3.7%) | |
| 60-90m (200-300 feet) of shelf space: 141 (3.4%) | |
| Over 90m (300 feet) of shelf space: 439 (10.6%) | |
