This article is from the alt.usage.english FAQ, by Mark Israel misrael@scripps.edu with numerous contributions by others.
"Syllable Stress & Unstress" by Howard Woods, a 1978 Govt. of Canada
publication, has this breakdown:
In a dictionary In a daily newspaper (showing frequency of use) Anglo-Saxon 20.2% 78.0% French 28.3% 15.2% Latin 28.5% 3.1% Old Norse 1.4% 2.4% Greek 3.6% 0.9% other 18.0% 0.4%
 
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