Does the unemployment rate have an effect on public expenditures?
I would have guessed that unemployed people get welfare money and this counts into the public expenditures.

But after introducing planned economy the value »unemployed« dropped down from 14 to 3 (I guess percent), while there is no visible change in public expenditures.

And now?

Still rising.. Or is my public expenditure so high, that the effect is not visible?

The total costs are not yet visible for you. But they are now 75% lower than before.