Appox. usage (any sense): 19.4 per million words
Appox. usage (any sense): 22.5 per million words
Appox. usage (any sense): 19.3 per million words
Appox. usage (any sense): 2.04 per million words
Appox. usage (any sense): 0.075 per million words
Appox. usage (any sense): 1.62 per million words