Thanks, yes I'd heard it was more mixed. If you had to guess the proportion of construction which was new floor area (not just building 3 stories, but replacing

Thanks, yes I'd heard it was more mixed. If you had to guess the proportion of construction which was new floor area (not just building 3 stories, but replacing a 1-story thing, etc.) would this be 10%, 50%, 90%? (I would blindly guess 90% for the US.)