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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1952 | 1 |
| 1953 | 2 |
| 1956 | 1 |
| 1958 | 2 |
| 1959 | 2 |
| 1961 | 1 |
| 1962 | 1 |
| 1963 | 2 |
| 1964 | 1 |
| 1972 | 1 |
| 1975 | 1 |
| 1989 | 2 |
| 1991 | 1 |
| 1997 | 1 |
| 2004 | 1 |
| 2005 | 1 |
| 2006 | 2 |
| 2007 | 4 |
| 2008 | 3 |
| 2009 | 3 |
| 2011 | 4 |
| 2012 | 7 |
| 2013 | 6 |
| 2014 | 5 |
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 6 |
| 2018 | 9 |
| 2024 | 0 |