applicable percentage
(2) (A) Except as provided in paragraph (1), in computing an annuity under this subchapter, the total service of an employee who retires on an immediate annuity or who dies leaving a survivor or survivors entitled to annuity includes the applicable percentage of the days of unused sick leave to his credit under a formal leave system and for which days the employee has not received payment, except that these days will not be counted in determining average pay or annuity eligibility under this subchapter. For purposes of this subsection, in the case of any such employee who is excepted from subchapter I of chapter 63 under section 6301(2)(x) through (xiii), the days of unused sick leave to his credit include any unused sick leave standing to his credit when he was excepted from such subchapter. (B) For purposes of subparagraph (A), the term “applicable percentage” means— (i) 50 percent in the case of an annuity, entitlement to which is based on a death or other separation occurring during the period beginning on the date of enactment of this paragraph and ending on December 31, 2013 ; and (ii) 100 percent in the case of an annuity, entitlement to which is based on a death or other separation occurring after December 31, 2013 .