CFR > Title 20 - Employees' Benefits > CHAPTER II—RAILROAD RETIREMENT BOARD > SUBCHAPTER B—REGULATIONS UNDER THE RAILROAD RETIREMENT ACT (parts 201 to 295) > PART 226—COMPUTING EMPLOYEE, SPOUSE, AND DIVORCED SPOUSE ANNUITIES > SUBPART E—Years of Service and Average Monthly Compensation (§226.60 to §226.63)