Appox. usage (any sense): 360 per million words
Appox. usage (any sense): 0.39 per million words
Appox. usage (any sense): 11.7 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): 0.015 per million words