Appox. usage (any sense): 3.25 per million words
Appox. usage (any sense): 1.5 per million words
Appox. usage (any sense): less than 0.1 per million words
Appox. usage (any sense): less than 0.1 per million words
Appox. usage (any sense): less than 0.1 per million words
Appox. usage (any sense): 10.5 per million words