Appox. usage (any sense): 63.5 per million words
Appox. usage (any sense): 66.2 per million words
Appox. usage (any sense): 26.8 per million words
Appox. usage (any sense): 17.7 per million words
Appox. usage (any sense): 0.931 per million words
Appox. usage (any sense): less than 0.1 per million words