Appox. usage (any sense): 11.6 per million words
Appox. usage (any sense): 1200 per million words
Appox. usage (any sense): 135 per million words
Appox. usage (any sense): 23.8 per million words
Appox. usage (any sense): 2.39 per million words
Appox. usage (any sense): less than 0.1 per million words