Appox. usage (any sense): 188 per million words
Appox. usage (any sense): 89.3 per million words
Appox. usage (any sense): 0.577 per million words
Appox. usage (any sense): 0.024 per million words
Appox. usage (any sense): 0.027 per million words
Appox. usage (any sense): 0.039 per million words