| Frequency | Percent | Valid Percent | Cumulative Percent | |
Valid | 6 - 10 years | 14 | 12.8 | 12.8 | 12.8 |
11 - 20 years | 46 | 42.2 | 42.2 | 55.0 | |
>20 years | 49 | 45.0 | 45.0 | 100.0 | |
Total | 109 | 100.0 | 100.0 |
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