If i consider the amount of people dead and risen to Heaven, since the second century AD, isn�t the Heaven ?

overpopulated? We are aware, that our planet is, with 6.5 milliard people living here, crowded. Where do, all the souls from dead people for 19 centuries go, since the beginning of Catholicism and Christianity, all religions? Do they have limited stay in Heaven, as we do on Earth, due to our mortality?