Appox. usage (any sense): 4.14 per million words
Appox. usage (any sense): 3.2 per million words
Appox. usage (any sense): 8.03 per million words
Appox. usage (any sense): 2.57 per million words
Appox. usage (any sense): 0.147 per million words
Appox. usage (any sense): less than 0.1 per million words