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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1949 | 1 |
| 1951 | 1 |
| 1952 | 1 |
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 1 |
| 1956 | 6 |
| 1957 | 4 |
| 1958 | 1 |
| 1959 | 2 |
| 1960 | 1 |
| 1961 | 1 |
| 1962 | 3 |
| 1963 | 1 |
| 1966 | 2 |
| 1968 | 4 |
| 1970 | 3 |
| 1972 | 2 |
| 1978 | 1 |
| 1980 | 1 |
| 1981 | 3 |
| 1989 | 1 |
| 1990 | 1 |
| 1992 | 1 |
| 1997 | 1 |
| 1998 | 2 |
| 2001 | 1 |
| 2003 | 1 |
| 2005 | 1 |
| 2008 | 3 |
| 2009 | 1 |
| 2010 | 1 |
| 2014 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2021 | 3 |
| 2023 | 2 |
| 2024 | 1 |