Your pipe is posterior to 1954
(1955 - today)
suffix [0]
suffix [1...4]
or [11...39]
suffix [5..9]
1960
1970
1960
+ suffix
2000
+ suffix
1950
+ suffix
1960
+ suffix
suffix
[00, 01, 02...]
smaller raised suffix?
smaller raised suffix?
◄yes
no ►
◄yes
no ►