How long did kings rule early Rome?

There were 7 kings in Rome before it became a republic and was ruled by consuls. Their names and how long they ruled are listed below. They ruled from its founding to 509 BCE (April 21, 753 BCE-509 BCE). When one king died, the other was traditionally elected by the people and Comitia Centuriate and then the vote was either ratified or vetoed by the Senate (they never actually vetoed though), although Servius Tullius ruled unofficially for a few years before he was a elected and Lucius Tarquinius Superbus took the throne by force. Romulus- Ruled for 38 years Numa Pompilius- Ruled for 43 years Tullus Hostilius- Ruled for 24 years Ancus Martius- Ruled for 32 years Lucius Tarquinius Priscus- Ruled for 38 years Servius Tullius- Ruled for 44 years Lucius Tarquinius Superbus- Ruled for 25 years