Cal. Gov. Code § 53325.7

The legislative body may submit a proposition to establish or change the appropriations limit, as defined by subdivision (h) of Section 8 of Article XIIIB of the California Constitution, of a community facilities district to the qualified electors of a proposed or established district. The proposition establishing or changing the appropriations limit shall become effective if approved by the qualified electors voting on the proposition and shall be adjusted for changes in the per capita personal income in the state and changes in populations, as defined by subdivisions (b) and (c) of Section 7901, except that the change in population may be estimated by the legislative body in the absence of an estimate by the Department of Finance, and in accordance with Section 1 of Article XIIIB of the California Constitution. For purposes of adjusting for changes in population, the population of the district shall be deemed to be at least one person during each calendar year.