Appox. usage (any sense): 826 per million words
Appox. usage (any sense): 459 per million words
Appox. usage (any sense): 1.45 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
Appox. usage (any sense): 457 per million words