Racing age groups

GenderAge @ 31/12Age GroupCat
M3030-34M1
M3535-39M2
M4040-44M3
M4545-49M4
M5050-54M5
M5555-59M6
M6060-64M7
M6565-69M8
M7070-74M9
M7575-79M10
M8080+80+
F3030-34F1
F3535-39F2
F4040-44F3
F4545-49F4
F5050-54F5
F5555-59F6
F6060-64F7
F6565-69F8
F7070-74F9
F7575-79F10
F8080+80+