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Hi,
I believe you mean this one:
you have for example 5 years so 4 periods of growth (from yr 1 to 2, 2 to 3, 3 to 4 and 4 to 5). Then to see the geometric growth divide the newest data between the oldest and calculate the root. (if you are considering three periods you will calculate the 3 root. If two the square root and so on and finally deduct 1 and multiply by 100 to get a percentage.
2004
26
2005
23
2006
21
2007
19
2008
40
to calculate growth from 2004 – 2008 put 40/26 then the 4 root, deduct 1 and multiply by 100 to get the percentage.
if you want to calculate growth from 2004 to 2006, 21/26 square root (because two periods of growth) and then less 1 multiply by 100.
hope this helps
Amarain
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