Same for me, population is growing good (as number) but tax stay the same. Could be logical thought (for once this game has something right), since we all started (at least me ?) with higher mortality than natality, now that the trend is reversed this is a baby boom, so the new children are not yet taxable (especially since only middle class seems to be taxable).
Other than that, numbers doesn't change much. I had some efficiency improvement in resources but it didn't change it, not that i could notice, i'm still in deficit everywhere. My road network is now at 3% capacity (what the hell does that even means ? 3% capacity of what ? Effectiveness, like the game start you have no road at all ?) but it didn't affect anything i could see. Same for my electrical network which is 2% now (no difference in the electricity generation). I'll try to up the major irrigation to see if farms yield get better (not really convinced but oh well...).
Yesterday i was positive on tobacco (in france...) for about an hour, for no reason (didn't do anything). And now i'm back at producing 10% of what my people need (jesus 663k tobacco needs ? for 70k adults ? that's very depressing). Well when you think about it, you have about 30-35k working people (not junior, not senior) and you produce billions of tons of product (and you need 10 times more...). They are working hard.
I'm hooked because there is the thrill to try to get a working state of a complete mess of a country, but if everything we do have no impact, i'm gonna be bored fast...
I mean, even if the numbers works, what do you do except war ? There is no construction, military is a pain in the ass (at least now), diplomacy... meh not very engaging.