Appox. usage (any sense): 1.07 per million words
Appox. usage (any sense): 0.384 per million words
Appox. usage (any sense): 0.273 per million words
Appox. usage (any sense): 0.018 per million words
Appox. usage (any sense): 0.015 per million words
Appox. usage (any sense): less than 0.1 per million words