Appox. usage (any sense): 15.2 per million words
Appox. usage (any sense): 44.4 per million words
Appox. usage (any sense): 29.4 per million words
Appox. usage (any sense): 3.19 per million words
Appox. usage (any sense): 1.47 per million words
Appox. usage (any sense): 0.027 per million words