2 pokolenia ( 1936 - 1940 )

3 pokolenia ( 1941 - 1946 )

4 pokolenia ( 1947 - 1955 )

4 pokolenia [odnowiony] ( 1955 - )

5 pokolenia ( 1955 - 1959 )

6 pokolenia ( 1960 - 1962 )

6 pokolenia [odnowiony] ( 1963 - 1966 )

7 pokolenia ( 1967 - 1970 )

7 pokolenia [odnowiony] ( 1971 - 1972 )

8 pokolenia ( 1973 - 1980 )

8 pokolenia [2-th odnowiony] ( 1989 - 1991 )

8 pokolenia [odnowiony] ( 1981 - 1988 )

GMT400 ( 1991 - 1999 )

GMT800 ( 2000 - 2005 )

GMT900 ( 2007 - 2014 )