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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1951 | 2 |
| 1954 | 1 |
| 1955 | 2 |
| 1956 | 1 |
| 1958 | 2 |
| 1960 | 1 |
| 1962 | 1 |
| 1963 | 3 |
| 1964 | 5 |
| 1965 | 1 |
| 1966 | 1 |
| 1967 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1970 | 2 |
| 1971 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1989 | 1 |
| 1991 | 1 |
| 2001 | 1 |
| 2003 | 1 |
| 2004 | 3 |
| 2005 | 2 |
| 2006 | 2 |
| 2007 | 3 |
| 2008 | 2 |
| 2009 | 5 |
| 2010 | 3 |
| 2011 | 4 |
| 2012 | 3 |
| 2013 | 2 |
| 2014 | 2 |
| 2015 | 4 |
| 2017 | 2 |
| 2018 | 2 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 0 |