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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1958 | 1 |
| 1959 | 1 |
| 1960 | 1 |
| 1961 | 1 |
| 1962 | 3 |
| 1963 | 5 |
| 1964 | 3 |
| 1965 | 4 |
| 1966 | 1 |
| 1967 | 2 |
| 1968 | 1 |
| 1969 | 2 |
| 1972 | 1 |
| 1978 | 1 |
| 1993 | 2 |
| 1997 | 2 |
| 1999 | 2 |
| 2000 | 1 |
| 2003 | 1 |
| 2006 | 2 |
| 2007 | 3 |
| 2009 | 1 |
| 2010 | 2 |
| 2011 | 1 |
| 2013 | 2 |
| 2014 | 1 |
| 2015 | 3 |
| 2016 | 7 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 9 |
| 2021 | 7 |
| 2022 | 1 |
| 2023 | 1 |