Appox. usage (any sense): 1.73 per million words
Appox. usage (any sense): 0.943 per million words
Appox. usage (any sense): 0.763 per million words
Appox. usage (any sense): 1.71 per million words
Appox. usage (any sense): 0.64 per million words
Appox. usage (any sense): less than 0.1 per million words