When I installed Civ4, Broadway provided 7 Hit Musicals, Hollywood provided 7 Hit Movies and Rock & Roll provided 7 Hit Singles. After a few games these numbers decreased to 6 each. I've just finished a game where I was getting 6 of each resource. After finishing that game, I went to the Civilopedia and found that the 3 wonders now provided 5 of each resource. Anyone know whats going on?