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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1948 | 1 |
| 1950 | 1 |
| 1958 | 1 |
| 1960 | 1 |
| 1961 | 1 |
| 1962 | 1 |
| 1965 | 1 |
| 1967 | 2 |
| 1968 | 2 |
| 1970 | 1 |
| 1971 | 1 |
| 1976 | 1 |
| 1978 | 2 |
| 1980 | 1 |
| 1981 | 1 |
| 1982 | 1 |
| 1989 | 1 |
| 1990 | 2 |
| 1991 | 1 |
| 1992 | 1 |
| 1996 | 2 |
| 1998 | 2 |
| 1999 | 1 |
| 2002 | 1 |
| 2004 | 1 |
| 2006 | 1 |
| 2007 | 1 |
| 2008 | 2 |
| 2011 | 1 |
| 2012 | 5 |
| 2013 | 5 |
| 2014 | 6 |
| 2015 | 5 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 5 |
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 1 |