| | | 1956 | 49.9‰ 20 | | 6.5‰ 20 | | 20 36.24‰ 20 | 23.9‰ 1990 | | | 86.07‰ 2.34‰ | 15 19 20 24 | | 3 | | | | | | | | | | | | 1985 | | 29.5% 2.3% | | 35 69.3 | |