> So, if the rest of the population is "insufficient data" and you only have the above to go off of, the only logical conclusion is that global polar bear population has likely increased.

Not at all. If I find a $20 in one single pair of pants, the logical conclusion is not that all of my pants have $20 in them.

> If you throw out the 60s because "it is bad data according to experts" then even the increase is still 50%.

The experts cited also indicate the 80s numbers have the same issue.

> If you want to address any claims or put forth real data, feel free.

Barring time machines, "real data" from the 1960s seems… tough to obtain.

Leaving us with people who know what they're talking about, who seem to widely agree on the point.