In the United Kingdom, for example, the Coroners and Justice Act in 2009 started as Bill 9 in the House of Commons. Then it became Bill 72 on consideration by the Committee, after that it became House of Lords Bill 33. Then it became House of Lords Bill 77, returned to the House of Commons as Bill 160 before finally being passed as Act no. 29. Parliament recommences numbering from one at the beginning of each session. This means that two different bills may have the same number. Sessions of parliament usually last a year. They begin with the State Opening of Parliament, and end with Prorogation.