YAC was worth 1,368,509,400,000BTC in 1970 
(I don't even know how to say that number)
(I don't even know how to say that number)1 trillion 368 billion 509 million 400 thousand
Oh yeah, I did know how to say it - at a glance I thought it was one up from a trillion (which is the one I don't know)
K.