PART I 57 The initial wholesale prices set by a dominant Type I service provider may be the retail price less fees  and expenses which need not be incurred, but shall not be higher than its promotional pricing. Changes in the  wholesale price charged by a dominant Type I service provider may not be greater than (i) the retail price less  fees and expenses which need not to be incurred but not greater than the promotional pricing; or (ii) the annual  growth rate of the consumer price index in Taiwan minus the constant set by the National Communications  Commission, whichever is the lower. The Regulations Governing Tariffs of Type I Service Providers further  prohibits a dominant Type I service provider from practicing unfair competition against other telecommunication  enterprises.  In comparison, all non-dominant Type I service providers are required to notify the National Communications  Commission and the public of their proposed tariff adjustments seven days prior to the date of the proposed  tariff change with respect to all tariffs. In addition, changes in tariffs charged by Type I service providers  (notwithstanding the type of their respective services) may not, in any event, be greater than the annual growth  rate of the consumer price index in Taiwan adjusted by a set constant, which will be periodically determined and  announced by the National Communications Commission. For example, if:  • the annual growth rate of the consumer price index in Taiwan minus the set constant is positive, the  increased percentage of tariffs must not exceed such positive figure;  • the annual growth rate of the consumer price index in Taiwan minus the set constant is negative, the  decreased percentage of tariffs must be at least the absolute value of such negative figure, and the  tariffs used in the given year must not be higher than the decreased tariff; and  •  the annual growth rate of the consumer price index in Taiwan minus the set constant equals to zero,  no increase in tariffs is allowed to be made by any Type I service providers.  On January 29, 2010, the National Communications Commission announced that effective from April 1,  2010 to March 31, 2013:  •  the set constant to be applied to the tariff adjustment for the fixed line integrated services is 4.816%  and covers the following:  • dominant providers of fixed line services  •  tariffs of the following:  • the monthly fee for ADSL leased line and the usage fee for domestic long distance  telephone services (excluding public pay phones)  •  wholesale prices of the following:  • the monthly fee for leased lines services (including local and domestic long distance  leased lines) between internet service providers and their customers  • the monthly fee for leased lines services (including local and domestic long distance  leased lines) between an internet service provider and another internet service  provider  • the monthly fee for the interconnection (including local and domestic long  distance lines) between a Type 1 telecommunication service provider and  another Type 1 telecommunication service provider; the monthly fee for the  interconnection (including local and domestic long distance lines) between a Type  1 telecommunication service provider and a Type 2 telecommunication service  provider who provides simple resale and network telephone service of E.164 user  numbers. 