Appox. usage (any sense): 59 per million words
Appox. usage (any sense): 11 per million words
Appox. usage (any sense): 4.58 per million words
Appox. usage (any sense): less than 0.1 per million words
Appox. usage (any sense): less than 0.1 per million words
Usage unknown
Appox. usage (any sense): less than 0.1 per million words