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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 1 |
| 1949 | 3 |
| 1950 | 1 |
| 1952 | 3 |
| 1953 | 1 |
| 1955 | 1 |
| 1956 | 1 |
| 1957 | 1 |
| 1958 | 1 |
| 1960 | 1 |
| 1963 | 1 |
| 1964 | 2 |
| 1965 | 1 |
| 1966 | 1 |
| 1981 | 1 |
| 1985 | 1 |
| 1986 | 3 |
| 1988 | 3 |
| 1989 | 3 |
| 1990 | 1 |
| 1991 | 1 |
| 1993 | 3 |
| 1995 | 1 |
| 1996 | 1 |
| 2004 | 1 |
| 2006 | 2 |
| 2007 | 3 |
| 2009 | 2 |
| 2010 | 1 |
| 2013 | 1 |
| 2015 | 2 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 1 |
| 2024 | 0 |