Reading a transducer sensitivity from its datasheet
The sensitivity is the output voltage range divided by the acceleration range. So  if you have the ±0.1 g version of the part, with an output voltage of ±7.5 V, then the sensitivity is:

$$ {7.5\:\mathrm V \over 0.1 g} = 75\:\mathrm V/g $$

This is a very high sensitivity as far as accelerometers go, but then these are marketed as "high sensitivity" devices with a "high level output", and this is the most sensitive device they make.

The datasheet specifies a "natural frequency" of "100 to 200 Hz, dependent upon range", so we can surmise sensitivity is highest somewhere in this range. In the datasheet I don't see anything more specific, so I suppose you'd need to either measure it yourself, look for a datasheet more specific to the particular part you've ordered, or contact the manufacturer for more detailed information.