Appox. usage (any sense): 147 per million words
Appox. usage (any sense): 635 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): 11.5 per million words