I can't export from that site... do you have to signup/login? And do they have data on global stocks as well? Europe/Asia?
If you do a search the results give you a little picture of an excel spreadsheet you can click on to export, top right corner of the results. You can also scrape the data programmatically, which is probably beyond the scope of this discussion. Haven't done anything global on this project so can't help you there.
It says only premium members can export... anyway, it looks like there's no international stocks in there... Just to be curious, what is the dividend amount that you get from now to March 17th in the S&P500? Is IB's schedule more or less correct?