Appox. usage (any sense): 30.5 per million words
Appox. usage (any sense): 0.075 per million words
Appox. usage (any sense): 0.069 per million words
Appox. usage (any sense): 2.33 per million words
Appox. usage (any sense): 0.294 per million words
Appox. usage (any sense): less than 0.1 per million words