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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1955 | 1 |
| 1961 | 1 |
| 1965 | 2 |
| 1966 | 2 |
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 1 |
| 1971 | 3 |
| 1973 | 1 |
| 1974 | 1 |
| 1979 | 1 |
| 1980 | 3 |
| 1981 | 1 |
| 1984 | 1 |
| 1990 | 1 |
| 1995 | 1 |
| 1996 | 3 |
| 2000 | 1 |
| 2001 | 1 |
| 2003 | 2 |
| 2004 | 6 |
| 2005 | 12 |
| 2006 | 14 |
| 2007 | 13 |
| 2008 | 9 |
| 2009 | 14 |
| 2011 | 1 |
| 2013 | 1 |
| 2014 | 1 |
| 2016 | 1 |
| 2017 | 3 |
| 2019 | 1 |
| 2020 | 1 |
| 2024 | 0 |