Appox. usage (any sense): 22.4 per million words
Appox. usage (any sense): 2.16 per million words
Appox. usage (any sense): 0.754 per million words
Appox. usage (any sense): 5.95 per million words
Appox. usage (any sense): 1.45 per million words
Appox. usage (any sense): less than 0.1 per million words