YEARS. GROWTH OF 1ST BRANCH. 2nd BRANCH. 3RD BRANCH 4TH BRANCH.
MAIN AXIS.
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in.
'79 8-1/2 -- -- -- --
'80 4-1/2 2 1-7/8 -- --
'81 3-1/2 1-1/8 2-5/8 -- --
'82 6 5/8 4-1/4 5-7/8 --
'83 7-3/8 3-3/8 5-1/4 4 5-3/4
'84 2 1/2 3/4 3/8 5-3/8
'85 5/8 1/4 3/8 1/2 1
'86 5-5/8 7/8 4-3/8 3-1/8 5