Retirement benefit, pension and annuity payments accruing on and after July 1, 1972, to persons entitled to receive such payments on June 30, 1971, shall be increased in an amount equal to five percent (5%) of the benefit, pension or annuity payment in effect on June 30, 1972, from the Kansas public employees retirement system, the Kansas police and firemen's retirement system, the state school retirement system, the Kansas highway patrol pension fund, the Kansas bureau of investigation pension fund, the Kansas retirement fund for official court reporters and the Kansas retirement fund for judges, except that such increase shall apply to the savings and service annuities payable to all members of the state school retirement system who have retired on or before June 30, 1972.
K.S.A. 74-4943