Appox. usage (any sense): 30 per million words
Appox. usage (any sense): 26.6 per million words
Appox. usage (any sense): 9.31 per million words
Appox. usage (any sense): 0.426 per million words
Appox. usage (any sense): 5.81 per million words
Appox. usage (any sense): 0.24 per million words
Appox. usage (any sense): less than 0.1 per million words