Appox. usage (any sense): 6.1 per million words
Appox. usage (any sense): 62.5 per million words
Appox. usage (any sense): 21.6 per million words
Appox. usage (any sense): 13.4 per million words
Appox. usage (any sense): 2.19 per million words
Appox. usage (any sense): less than 0.1 per million words