Appox. usage (any sense): 6.28 per million words
Appox. usage (any sense): 320 per million words
Appox. usage (any sense): 120 per million words
Appox. usage (any sense): 120 per million words
Appox. usage (any sense): 8.3 per million words
Appox. usage (any sense): 11.4 per million words