How rare is a 1989 Polar 16570?

[Paulkdm]

Lurker here, as the title states, is there a place for me to find the amount of 89 polar units made? I've been on google but can't seem to find a place that list the number of 16570 units made. I did see a list for the number of watches rolex produced that year, but since it's the first year of production, I'm assuming it's more rare? any info would be much appreciated.