Demographics
Population trend
| Year | Residents (in million) | Natural growth rate (%) |
| 1949 | 2.5670 | 13.09 |
| 1950 | 2.5670 | 15.64 |
| 1955 | 2.8034 | 19.94 |
| 1960 | 3.2259 | 0.23 |
| 1965 | 3.4529 | 25.58 |
| 1970 | 3.6053 | 20.76 |
| 1975 | 3.9299 | 9.53 |
| 1978 | 4.1238 | 8.84 |
| 1980 | 4.3587 | 8.08 |
| 1985 | 4.6577 | 4.56 |
| 1990 | 5.0182 | 9.18 |
| 1995 | 5.2172 | 2.62 |
| 1996 | 5.2543 | 2.63 |
| 1997 | 5.2982 | 2.16 |
| 1998 | 5.3231 | 1.00 |
| 1999 | 5.3744 | 2.01 |
| 2000 | 5.4489 | 2.48 |
| 2001 | 5.5304 | 1.60 |
| 2002 | 5.6328 | 0.70 |
| 2003 | 5.7223 | 1.50 |
| 2006 | 6.0700 | 6.11 |
Location
