Can landlord charge for minor damages to carpet that is past carpet life expectancy?

I have carpet that is a 5 year carpet and I have lived here six years and moving out the end of six years {now}. I have kept the carpet clean but there is a small pink spot about the size of a quarter in one of the bedrooms and honestly the carpet is so worn that there is absoluteely no pile left.. Can landlord charge for that small spot?