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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1954 | 2 |
| 1956 | 1 |
| 1960 | 1 |
| 1963 | 1 |
| 1964 | 3 |
| 1971 | 2 |
| 1972 | 2 |
| 1973 | 2 |
| 1974 | 1 |
| 1976 | 2 |
| 1977 | 1 |
| 1978 | 2 |
| 1979 | 1 |
| 1980 | 2 |
| 1981 | 2 |
| 1982 | 1 |
| 1983 | 1 |
| 1984 | 2 |
| 1987 | 2 |
| 1994 | 1 |
| 1999 | 1 |
| 2001 | 2 |
| 2003 | 1 |
| 2006 | 2 |
| 2007 | 2 |
| 2008 | 2 |
| 2009 | 1 |
| 2012 | 1 |
| 2013 | 1 |
| 2014 | 2 |
| 2015 | 1 |
| 2016 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 0 |