Nobody has gone to Hell yet so no population clock for Hell. People don't go to Hell immediately when they die. First they go to Hades from where they will be resurrected. Lazarus was on the good side; the rich man was in the bad side of Sheol. The unsaved get resurrected for Hell from Hades 1000 years after the saved.

The first person that goes to Hell is the Antichrist. Adam was born 4004 BC. He was 18 years old 3986 BC. This is determined by adding the ages up in the Bible. There are 120 Jubilees from 3986 BC to 2015 also very meticulously determined. There were no men made in God's image before Adam. Before Adam was the pre-endemic or pre-Adamic race: our bodies derived from dust. In other words when they died they would cease to exist.

Time stands still in Hell? No it doesn't. It carries on. Hell is not a place where people that will go there will want to leave. They prefer it than being with God and the Lamb at the center of the New City, and the angels and elect. As much as there is wailing (sorrow) and gnashing of teeth (regret) in Hell they still prefer to be there than be with God and His sons and daughters. There are no pets in Hell, but neither are there pets or animals of any kind in Heaven. The Bible makes no mention of them. There is also wailing and gnashing of teeth in outer darkness (which has no fire or furnace about it) for believers who were like the 5 unwise virgins to be disciplined 1000 years, but they will be corrected and made ready for the New City after the millennial kingdom is over.