Appox. usage (any sense): 17.5 per million words
Appox. usage (any sense): 27.7 per million words
Appox. usage (any sense): 6.42 per million words
Appox. usage (any sense): 0.751 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