Appox. usage (any sense): 5.48 per million words
Appox. usage (any sense): 3.59 per million words
Appox. usage (any sense): 2.81 per million words
Appox. usage (any sense): 2.53 per million words
Appox. usage (any sense): 1.35 per million words
Appox. usage (any sense): 0.141 per million words