How often do you use | ||||||||||||||||
Fall 06 | Spring 07 | Fall 07 | Spring 08 | Fall 08 | Spring 09 | Fall 09 | Spring 10 | Fall 10 | Spring 11 | Fall 11 | Spring 12 | Fall 12 | Spring 13 | Fall 13 | ||
Daily | 24% | 24.5% | 24.0% | 21.9% | 25.7% | 20.4% | 19.9% | 24.1% | 24.0% | 25.1% | 30.1% | 27.7% | 31.6% | 23.3% | 20.1% | |
Weekly | 49% | 43.0% | 51.3% | 49.5% | 51.6% | 43.1% | 47.5% | 51.0% | 54.7% | 53.0% | 45.2% | 45.7% | 43.9% | 49.2% | 45.0% | |
Monthly | 12% | 9.5% | 9.1% | 11.6% | 7.8% | 11.1% | 10.4% | 10.3% | 10.1% | 9.8% | 9.6% | 12.8% | 11.4% | 11.2% | 10.1% | |
Less than Monthly | 15% | 22.1% | 16% | 17.0% | 14.8% | 25.5% | 22.2% | 14.5% | 11.3% | 12.1% | 15.1% | 13.8% | 13.2% | 16.2% | 24.8% | |
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