Automatic escalation of the appraised rental at reopening may be permitted. The increase shall be based on the "Consumer Price Index for all Urban Consumers, U.S. City Average", published monthly by the Bureau of Labor Statistics of the U.S. Department of Labor, labeled as "CPI". The calculation of the escalated value shall be based on a base index and a reopening period index, both of which are arithmetic averages over a set period of time. The quotient of these two indexes will set the rate of increase, which is then multiplied by the existing rental, giving the rental for the ensuing period.
In the event publication of the CPI is discontinued or not available, any comparable statistics, equivalent to the CPI, published by an agency of the United States or by a responsible financial periodical of recognized authority, shall be used to calculate the indexes as described in the preceding paragraph.
The CPI computation shall be conclusive and binding, but shall not preclude any adjustment in the event of a published amendment to the CPI or an error in the computation; provided the lessee, within thirty days after receipt of notice, shall notify the lessor of the claimed error or dispute therein.
Haw. Code R. § 4-153-18