| Value | Category | 
|---|---|
| 1950 | 1950 | 
| 1951 | 1951 | 
| 1952 | 1952 | 
| 1953 | 1953 | 
| 1954 | 1954 | 
| 1955 | 1955 | 
| 1956 | 1956 | 
| 1957 | 1957 | 
| 1958 | 1958 | 
| 1959 | 1959 | 
| 1960 | 1960 | 
| 1961 | 1961 | 
| 1962 | 1962 | 
| 1963 | 1963 | 
| 1964 | 1964 | 
| 1965 | 1965 | 
| 1966 | 1966 | 
| 1967 | 1967 | 
| 1968 | 1968 | 
| 1969 | 1969 | 
| 1970 | 1970 | 
| 1971 | 1971 | 
| 1972 | 1972 | 
| 1973 | 1973 | 
| 1974 | 1974 | 
| 1975 | 1975 | 
| 1976 | 1976 | 
| 9999 | NIU (not in universe) | 
| var_concept.title | Vocabulary | 
|---|---|
| General maternal and infant health Variables -- TOPICS | IPUMS |