Global factor of increase  1.5 per annum (year after year) 

• Global rate of consumption of 4.68 /8s per annum at end of 2000

• Two scenarios (i) 83 x /8s remaining and (ii) 107 x /8s remaining

12 month factor on /8s consumed running total of /8s

time frame previous year in this year consumed “to date”

end 00 1.3 4.68 4.68

end 01 1.5 7.020 11.70

end 02 1.5 10.53 22.23

end 03 1.5 15.79 38.03

end 04 1.5 23.69 61.72

end 05 1.5 35.54 97.26

end 06 1.5 53.31 150.29

x

+

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