Appox. usage (any sense): 7.67 per million words
Appox. usage (any sense): 16.1 per million words
Appox. usage (any sense): 4.93 per million words
Appox. usage (any sense): 1.57 per million words
Appox. usage (any sense): 2.12 per million words
Appox. usage (any sense): less than 0.1 per million words