Appox. usage (any sense): 35.9 per million words
Appox. usage (any sense): 31.2 per million words
Appox. usage (any sense): 2.87 per million words
Appox. usage (any sense): 2.26 per million words
Appox. usage (any sense): 0.237 per million words
Appox. usage (any sense): less than 0.1 per million words