Date of Retirement 7-1-85 and after 7-1-84 through 6-1-85 7-1-83 through 6-1-84 7-1-82 through 6-1-83 7-1-81 through 6-1-82 7-1-80 through 6-1-81 7-1-79 through 6-1-80 7-1-78 through 6-1-79 7-1-77 through 6-1-78 7-1-76 through 6-1-77 7-1-75 through 6-1-76 Before 7-1-75 Percent of Increase 0% 5% 10% 11% 12% 13% 14% 15% 16% 17% 18% 20%