| Age (years) | Sex | ||
| Male Freq (%) | Female Freq (%) | Total Freq (%) | |
| 18 - 27 | 3 (0.6) | 28 (5.6) | 31 (6.2) |
| 28 - 37 | 18 (3.6) | 165 (33.0) | 183 (36.6) |
| 38 - 47 | 38 (7.6) | 129 (25.8) | 167 (33.4) |
| 48 - 57 | 31 (6.2) | 67 (13.4) | 98 (19.6) |
| 58 - 67 | 10 (2.0) | 11 (2.2) | 21 (4.2) |
| Total | 100 (20.0) | 400 (80.0) | 500 (100.0) |