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"