| 1990 | 2000 | |
|---|---|---|
| Cohort 1: | 20-29 | 30-39 and in housing unit for at least 10 years |
| Cohort 2: | 30-39 | 40-49 and in housing unit for at least 10 years |
| Cohort 3: | 40-49 | 50-59 and in housing unit for at least 10 years |
| Cohort 4: | 50-59 | 60-69 and in housing unit for at least 10 years |
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