How many twins are there out there?

How many people on here have a twin? Or triplets? Or more? I had a twin brother but he died before we were born.

My husband's sisters are twins, and my aunts are twins, my grandmother was a twin and I have twin cousins...so that's 4 sets so far!

my grandpa was a twin
and my geat aunt was too.
I have a friend who's a twin too

There are approximately 100 million twins worldwide.
The twin birth rate for fraternal twins varies slightly from country to country; identical twin birth rates are pretty much constant all over the world.
In Australia the twin birth rate is currently about 1 set of twins for every 80 births; there are a total of approx half a million twins in Australia.

http://www.twinsrealm.com/twinsfaq.htm