Population history
Population by year
| Year | Total | Male | Female | Density |
|---|---|---|---|---|
| 1950 | 23,000 | — | — | — |
| 1951 | 23,000 | — | — | — |
| 1952 | 24,000 | — | — | — |
| 1953 | 24,000 | — | — | — |
| 1954 | 25,000 | — | — | — |
| 1955 | 26,000 | — | — | — |
| 1956 | 27,000 | — | — | — |
| 1957 | 28,000 | — | — | — |
| 1958 | 29,000 | — | — | — |
| 1959 | 30,000 | — | — | — |
| 1960 | 32,000 | — | — | — |
| 1961 | 33,000 | — | — | — |
| 1962 | 34,000 | — | — | — |
| 1963 | 35,000 | — | — | — |
| 1964 | 37,000 | — | — | — |
| 1965 | 38,000 | — | — | — |
| 1966 | 39,000 | — | — | — |
| 1967 | 41,000 | — | — | — |
| 1968 | 42,000 | — | — | — |
| 1969 | 44,000 | — | — | — |
| 1970 | 45,000 | — | — | — |
| 1971 | 46,000 | — | — | — |
| 1972 | 47,000 | — | — | — |
| 1973 | 47,000 | — | — | — |
| 1974 | 48,000 | — | — | — |
| 1975 | 49,000 | — | — | — |
| 1976 | 49,000 | — | — | — |
| 1977 | 49,000 | — | — | — |
| 1978 | 49,000 | — | — | — |
| 1979 | 49,000 | — | — | — |
| 1980 | 50,000 | — | — | — |
| 1981 | 50,000 | — | — | — |
| 1982 | 51,000 | — | — | — |
| 1983 | 51,000 | — | — | — |
| 1984 | 52,000 | — | — | — |
| 1985 | 53,000 | — | — | — |
| 1986 | 53,000 | — | — | — |
| 1987 | 54,000 | — | — | — |
| 1988 | 54,000 | — | — | — |
| 1989 | 55,000 | — | — | — |
| 1990 | 55,000 | — | — | — |
| 1991 | 55,000 | — | — | — |
| 1992 | 55,000 | — | — | — |
| 1993 | 55,000 | — | — | — |
| 1994 | 55,000 | — | — | — |
| 1995 | 55,000 | — | — | — |
| 1996 | 55,000 | — | — | — |
| 1997 | 56,000 | — | — | — |
| 1998 | 56,000 | — | — | — |
| 1999 | 56,000 | — | — | — |
| 2000 | 56,000 | — | — | — |
| 2001 | 56,000 | — | — | — |
| 2002 | 56,000 | — | — | — |
| 2003 | 56,000 | — | — | — |
| 2004 | 56,000 | — | — | — |
| 2005 | 56,000 | — | — | — |
| 2006 | 56,000 | — | — | — |
| 2007 | 56,000 | — | — | — |
| 2008 | 56,000 | — | — | — |
| 2009 | 56,000 | — | — | — |
| 2010 | 56,000 | — | — | — |
| 2011 | 56,000 | — | — | — |
| 2012 | 56,000 | — | — | — |
| 2013 | 56,000 | — | — | — |
| 2014 | 56,000 | — | — | — |
| 2015 | 56,000 | — | — | — |
| 2016 | 56,000 | — | — | — |
| 2017 | 56,000 | — | — | — |
| 2018 | 56,000 | — | — | — |
| 2019 | 56,000 | — | — | — |
| 2020 | 56,000 | — | — | — |
| 2021 | 56,000 | — | — | — |
| 2022 | 55,000 | — | — | — |
| 2023 | 55,000 | — | — | — |
| 2024 | 55,000 | — | — | — |
| 2025 | 55,000 | — | — | — |