You would have figured this one out yourself if you had continued to play.You assumed that the remaining 65 turns would all take 1 year, which isn't true.
It's now 2015AD, and there are 5 more turns of 1 year and then 60 turns of 1/2 year which results in a game that ends in 2050AD.
It seems that all you have to do to win is click 65 times on next turn.I can't see you losing this game.
