I don't think the garlic farmers need to start worrying yet. We cooked with the home grown garlic today. The cloves were very small - I'm sure the whole bulb was smaller than the clove I planted last year.
The garlic itself smelt reasonably pungent - not quite as 'garlicky' as the Tesco Organic garlic (which has a much better 'fresh garlic' smell than their normal stuff).