Large income drop?

[UnStashable]

Hey guys I am new here, thanks in advance for any help. I am playing Civ 5 gold edition (includes Gods & Kings and all DLC's I think). I was playing a game as the Dutch on level 4 difficulty, and was doing OK. On turn 303 I had an income of +77 gold a turn, on turn 304 I all of a sudden had an income of -7 a turn, I had only built one Ironclad in that turn and had actually donated 2 unites (artillery and rifleman) to a city state. No other units or buildings were completed. I did not even finish researching any techs.

Could anyone tell me why i experienced such a massive drop off? Specifically it says on turn 303 as 341 gold output from all cities but only 258 from all cities on turn 304. Most other factors changed only by a couple gold.

This is turn 303 Screen shot
and a turn 304 Screen shot.

Thanks for any input guys.

 

[Unresolved]

You went from a Golden Age to normal. That's why you lost so much GPT.

On a side note, you have massive unit maintenance o-o. Mines usually half or a third of that.

 

[UnStashable]

Ahh, yes I feel sheepish for missing that, thank you. And yeah I don't normally have so many but I was attacked by different civs at once then the Huns attacked my defensive pact ally, drawing me into a 3 front war at once. As I get out of each conflict I plan to decommission or donate a bunch of units to city states, again thanks.