Ouch, Sorry to hear that. I know how you feel (at least somewhat anyways)
I don't know if I already said so, but I had one year a couple years ago, where 7 friends/family members all died. Both my great grandparents, a grandparent, a cousin, and three friends. :/
Don't let it get you down though, as far as death goes, if they're going to the right place, I don't mourn, I celebrate. They're in a better place. If not, then I'll mourn, but there isn't any use in crying over spilled milk, just try to get over it and move on.