Give you a statement and table with its title, please determine whether the statement is supported or refuted by, or is unrelated to the table. It'a ternary classification problem, you should choose the answer among supported, refuted and neutral. Table cells in one row are seperated by '|', and different rows are seperated by '
'. If cell value is a list, we use '	' to seperate each list element.

Table:
| Role | Narrow-body jet airliner |
| National origin | Soviet Union/Russia |
| Manufacturer | Aviastar SP (Tu-204 series)  ,  Kazan Aircraft Production Association (Tu-214) |
| Design group | Tupolev |
| First flight | January 2, 1989; 30 years ago (1989-01-02) |
| Introduction | February 23, 1996 with Aeroflot |
| Status | Active, In production |
| Primary users | Red Wings Airlines (Historical) , Rossiya (Historical) , Aviastar-TU , Air Koryo , Cubana Airlines |
| Produced | 1990-present |
| Number built | 86 |
| Unit cost | $35 million (2007) |
Title:
Tu-204 / Tu-214
Statement:
The Tu-204 / Tu-214 has never had any revisions over the years.
Answer:
refuted