May the City Council impose, for periods not to exceed two years, the Utility Users' Tax pursuant to Municipal Code Chapter 3.14, for general government purposes, in an amount not to exceed 5%, after public hearing(s) and making written findings that the funds are needed for basic public safety, health, youth and senior citizens services? The tax may be overturned ay time by subsequent referendum vote and may not be imposed after January 1, 2011.