About 4-5 per week currently. I don't smoke in the house or car, and I also don't like smoking while on a walk (don't clench).. So this leaves evenings (or home-office lunch breaks) out in the garden, when the weather is nice enough and it is not windy. Oh yeah: I live in Denmark, so half of the year is dark, cold and windy. Tried the garage in winter, but I would need some major comfort improvements there to make this a real option...