(1) Exceed one thousand five hundred dollars per year, nor

(2) Together with the retirement allowance computed without optional modification, and the primary benefit obtained under the federal old-age survivors, and disability insurance system, exceed four thousand dollars a year, nor

(3) In the case of any person under the age of sixty-two retired for disability, together with the retirement allowance computed without optional modification, the primary benefit obtained under the federal old-age, survivors, and disability insurance system, and any earnings as the result of his own employment including self employment, exceed four thousand dollars a year, nor

(4) In the case of state retired employees, be paid for that portion of the annuity based on additional contributions made pursuant to section twenty-one (i) of the retirement and social security law, or section fifty-eight of the civil service law since repealed, nor, in the case of state retired teachers, that portion of the annuity based on additional contributions made pursuant to subdivision three of section five hundred sixteen of the education law, nor

(5) Be paid to any state retired employee or state retired teacher for any period during which he returns to service with the state or a political subdivision thereof other than service in employment authorized by section two hundred eleven, section two hundred twelve or section two hundred fourteen of this chapter. b. The supplemental retirement allowance shall be computed in accordance with the following schedule: YEAR OF RETIREMENT PER CENTUM 1961 or thereafter none 1960 three 1959 five 1958 six 1957 nine 1956 thirteen 1955 fifteen 1954 fifteen 1953 fifteen 1952 sixteen 1951 eighteen 1950 twenty-eight 1949 twenty-eight 1948 twenty-eight 1947 thirty-eight 1946 fifty-eight 1945 seventy-two 1944 seventy-six 1943 seventy-nine 1942 ninety 1941 one-hundred-eleven 1940 one-hundred-twenty-two Prior to 1940 one-hundred-twenty-two c. Any such retired employee already receiving a supplemental pension under other provisions of the retirement and social security law shall continue to receive such supplemental pension or shall receive the supplemental retirement allowance provided under this section, whichever shall be greater.