Total babies named Masaru (all years): 447
| Year | Boys (count / rank / %) |
|---|---|
| 1992 | 5 / #9336 / 0.000% |
| 1943 | 5 / #3865 / 0.000% |
| 1942 | 5 / #3887 / 0.000% |
| 1936 | 6 / #3405 / 0.001% |
| 1935 | 5 / #3980 / 0.000% |
| 1933 | 9 / #2664 / 0.001% |
| 1932 | 9 / #2774 / 0.001% |
| 1931 | 11 / #2419 / 0.001% |
| 1930 | 8 / #3189 / 0.001% |
| 1929 | 21 / #1651 / 0.002% |
| Year | Boys (count / rank / %) |
|---|---|
| 1928 | 19 / #1802 / 0.002% |
| 1927 | 17 / #2007 / 0.002% |
| 1926 | 27 / #1424 / 0.002% |
| 1925 | 29 / #1383 / 0.003% |
| 1924 | 30 / #1370 / 0.003% |
| 1923 | 23 / #1626 / 0.002% |
| 1922 | 21 / #1739 / 0.002% |
| 1921 | 29 / #1407 / 0.003% |
| 1920 | 29 / #1371 / 0.003% |
| 1919 | 18 / #1853 / 0.002% |
| Year | Boys (count / rank / %) |
|---|---|
| 1918 | 17 / #1965 / 0.002% |
| 1917 | 31 / #1232 / 0.003% |
| 1916 | 19 / #1676 / 0.002% |
| 1915 | 19 / #1642 / 0.002% |
| 1914 | 18 / #1475 / 0.003% |
| 1913 | 6 / #2686 / 0.001% |
| 1912 | 11 / #1588 / 0.003% |