How much of the ozone layer is left?? :o

Question: How much of the ozone layer is left?? :o
- Keywords:
  atmosphere,
  O-Zone
Asked by rjlavin to Arlene, Colin, David, Eugene, Paul on 20 Nov 2012.
- David McKeown answered on 20 Nov 2012:
  
  There is about 5% of the earth’s surface which is said to have holes in the ozone layer. These are mainly around the north and south poles. Generally the amount of ozone is dropping by 4% every 10 years. eek!
- Paul Higgins answered on 21 Nov 2012:
  
  Yeah, but the ozone layer changes from year to year, and I heard the holes move around. I think there was a hole over new zealand and people were getting bad sun burns- I don’t know if that is still happening.

Question: How much of the ozone layer is left?? :o