Appox. usage (any sense): 8.5 per million words
Appox. usage (any sense): 1.12 per million words
Appox. usage (any sense): 0.063 per million words
Appox. usage (any sense): 0.069 per million words
Appox. usage (any sense): 0.048 per million words
Appox. usage (any sense): less than 0.1 per million words