2-2.5 Years (7C) 2.5-3 Years (8C) 3-3.5 Years (9C) 3.5-4 Years (10C) 4-4.5 Years (11C) 4.5-5 Years (11C) 4.5-5 Years (12C) 5-6 Years (13C) 7-8 Years (1 UK) (12C) (13C) 2.5-3 Years (7C) 3-3.5 Years (8C) 3.5-4 Years (9C) 4-4.5 Years (10C) 4.5-5 Years (11C)