Chart Data availability 15M

 
I open a chart for the pair GBP/USD. I have selected 15M. Then I scroll back as much as I can and I can see data as earliest as 22 Feb 2007. How can I see 15M data before this date?
 

You are limited to the data the Dealer you are connected to provides. Some give more history, others less.

In the HistoryCenter, you can download data from Metaquotes. I hear it goes back a long way, but it will
not necessarily match your dealer's quotes.

You can experiment without harm, deleting history files you don't like them, they will be restored on MT4 restart
from your Dealer.

 
thanks for the hint. I got what I need.