                     1980~1989                 1915 11 20   1989 4 15     
  1930        1933         1934       1937 4          1937 9                                                  1952        1957                   1956           1965                               1975                                  1977                     1978 12                                                          1980 2                           1981 6                 1982                         1987 1                      