| reading matter | textbooks | books | encyclopaedias | magazines | newspapers | Internet based readings | |
| age | 7 years | 61.1% | 73.6% | 44.4% | 6.9% | 4.1% | 2.7% |
| 8 years | 61.3% | 77.2% | 48.8% | 11.5 % | 1.1% | 3.4% | |
| 9 years | 57.6% | 75.9% | 51.9% | 10.4% | 0% | 2.6% | |
| 10 years | 58.5% | 76.3% | 48.8% | 11.0% | 1.5% | 4.3% | |
| 11 years | 54.4% | 72.6% | 45.3% | 14.7% | 1.09% | 7.6% | |