Nice catch. I didn't read carefully enough. 'Western world' being a key phrase. I got my stat from this statement "New Zealand has the second highest rate of imprisonment in the Western world.[12]" from here http://en.wikipedia.org/wiki/Department_of_Corrections_(New_...
Even so, mpwieher's comment still stands to some degree. At a rate of 190, NZ is still around the same level as other Western countries which range from 70 to 150ish. It's nowhere near the proportion of people imprisoned by the US at 730. That's a pretty big dropoff between first and second place.