Appox. usage (any sense): 2170 per million words
Appox. usage (any sense): 780 per million words
Appox. usage (any sense): 131 per million words
Appox. usage (any sense): 2.3 per million words
Appox. usage (any sense): 2.33 per million words
Appox. usage (any sense): 0.616 per million words
Appox. usage (any sense): 0.496 per million words
Usage unknown
Appox. usage (any sense): less than 0.1 per million words