Chart from a presentation by Andy Smith at the LBMA conference in Rome.
Looking at the dips in the chart of the Roman Emperors it is interesting to note the two worst Emperors prior to the final collapse of Rome were Vespasian and his son Titus. They launched the most significant war in the Middle East of all time, in which Titus captured Jerusalem, sacked and destroyed the Second Temple and stole the Menorah. It was reported at the time that 1.1 million people died in the war and the Romans took 100,000 people as slaves. The Romans really did shock and awe better than anyone.