Joao da Silva,
After one year of industrial dispute, 16% of the total workforce are prepared to vote for strike action, which may well be 'unprotected.'
It doesn't take much to anonymously tick a box on the form. That's a relatively unimportant statistic as far as this dispute is concerned.
But let's see how many are prepared to (possibly) risk losing their jobs by participating in (possibly) unprotected industrial action.
Then I think your 16% might have to shift a decimal place. Or two.