(a) A pension payable under this chapter shall be adjusted no less liberally than adjustments made for pensions payable under the State Employees' Pension Plan, taking into account adjustments to Social Security benefits payable to state employees.
(b) Any monthly service pension, disability pension or survivor pension based on a former service or disability pension which is payable on July 7, 2005, shall be increased effective July 1, 2005, by the amount of difference between the pensioner's computed benefit under this chapter of this title, as effective July 1, 2005, less the benefit previously awarded under this chapter of this title.