| | | | ● | | 1971 | | | | | | | 1976 | | 1976 | | | | | | | | | | 1978 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 12 | | | | | | | | | | PS | | | | | | | 20 | | 200 | | | | | | | | | | | | | | | | | PS | | 8000 | | | 300 | 80 | 3% | | | 15 1800 | | 1982 6 4 | | | | | | | | | |