iTunes Charts not showing on iPhone

When I try to load up the itunes charts on my iPhone, I go on to the music section, which loads up on featured just fine, but when I click on the charts button, the screen just goes blank. No matter how long you wait nothing shows up. In the status bar, the network connection in progress shows up for a few seconds after clicking the charts icon, then disappears, still leaving a blank screen. I've tried the obvious things such as rebooting my phone and Internet router and it hasn't worked. I thought it could have been itunes had gone down but theirs been no tweets or anything about that, and its been happening for a couple of weeks now. So everything on itunes works fine apart from the charts section. Can anyone help? Thanks.