| | | | | | | | | | | | | | | | Year | Reporting Status | Population | | 1990 | Reporting | 20,652 | | 1991 | Reporting | 20,157 | | 1992 | Reporting | 20,498 | | 1993 | Reporting | 20,862 | | 1994 | Reporting | 20,693 | | 1995 | Reporting | 20,927 | | 1996 | Reporting | 21,101 | | 1997 | Reporting | 21,490 | | 1998 | Reporting | 21,168 | | 1999 | Reporting | 21,605 |
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