I have been able to accumulate a meager cellar of tobacco since I began smoking last November. I have several tins and quite a few jars that are packed relatively full. However, I have a few jars that have some empty space in them. This is mostly because the larger jars were the only ones I had at the time, plus I liked the idea of a green jar for Green Dragon. Would this amount of empty space in the jars pictured cause the tobacco to dry out in, say one or two years?