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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1949 | 1 |
| 1955 | 1 |
| 1956 | 1 |
| 1957 | 1 |
| 1961 | 2 |
| 1965 | 3 |
| 1966 | 1 |
| 1970 | 1 |
| 1971 | 1 |
| 1973 | 1 |
| 1974 | 1 |
| 1976 | 3 |
| 1986 | 3 |
| 1987 | 2 |
| 1988 | 1 |
| 1989 | 1 |
| 1990 | 1 |
| 1991 | 1 |
| 1995 | 3 |
| 1996 | 1 |
| 1997 | 2 |
| 1998 | 1 |
| 1999 | 2 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 1 |
| 2006 | 1 |
| 2007 | 3 |
| 2008 | 1 |
| 2009 | 2 |
| 2014 | 1 |
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 1 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 2 |
| 2024 | 1 |