Appox. usage (any sense): 2.58 per million words
Appox. usage (any sense): 0.09 per million words
Appox. usage (any sense): 0.063 per million words
Appox. usage (any sense): 0.084 per million words
Appox. usage (any sense): 0.012 per million words
Appox. usage (any sense): less than 0.1 per million words