Appox. usage (any sense): 51.7 per million words
Appox. usage (any sense): 90.9 per million words
Appox. usage (any sense): 24 per million words
Appox. usage (any sense): 23.8 per million words
Appox. usage (any sense): 12.7 per million words
Appox. usage (any sense): 12.7 per million words