Five years since I've heard my dad's voice

It is so hard to believe it's been five years since I've heard my dad's voice.  All through my life, the five-year mark has always been a tough one, regardless of what sadness or tough event I was remembering.  I just can't believe it's been five years since I spoke to him.  He called me from the hospital while the kids and I were with Mom at a cat show.  I'm so grateful he is no longer suffering, but I sure do miss him.