Appox. usage (any sense): 35.2 per million words
Appox. usage (any sense): 0.919 per million words
Appox. usage (any sense): 3.92 per million words
Appox. usage (any sense): 4.33 per million words
Appox. usage (any sense): 0.634 per million words
Appox. usage (any sense): less than 0.1 per million words