Appox. usage (any sense): 119 per million words
Appox. usage (any sense): 14.6 per million words
Appox. usage (any sense): 0.775 per million words
Appox. usage (any sense): 0.342 per million words
Appox. usage (any sense): 0.021 per million words
Appox. usage (any sense): less than 0.1 per million words