U+01B3 is widely used in Africa. It is also used in the Americas. The glyph on the left (with left hook) is the glyph the Unicode Consortium originally used in the Unicode code charts. However, since Unicode 5.0 the Unicode charts have used the glyph on the right (with right hook). See the proposal for this change: Correcting reference glyph for U+01B3 LATIN CAPITAL LETTER Y WITH HOOK. The most common usage is the one on the right with a right hook.