text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_26389588_1 (year_of_introduction VARCHAR, name___designation VARCHAR)
  ### Question:
  How many different years was the name/designation cetme?
  ### Answer:
  SELECT COUNT(year_of_introduction) FROM table_26389588_1 WHERE name___designation = "CETME"