Can’t see all of my contacts anymore to choose from

On hotmail I used to be able to see my ENTIRE list of contacts to choose who I wanted to send an email to. Now I only see a partial list. I can't remember some people's email addresses so it makes it really HARD to include them in my mailings unless I can see my entire list!!! Why can't I see my entire mailing list of people when you click on PEOPLE? I know they are there because if I type in certain names they do come up. Sometimes I can't remember all the names of people who I want to include and that why actually looking at the list was nice! I never forgot anyone!