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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1949 | 1 |
| 1950 | 3 |
| 1951 | 5 |
| 1952 | 4 |
| 1953 | 1 |
| 1957 | 1 |
| 1960 | 1 |
| 1961 | 2 |
| 1964 | 1 |
| 1969 | 4 |
| 1970 | 1 |
| 1971 | 4 |
| 1972 | 3 |
| 1973 | 3 |
| 1974 | 2 |
| 1980 | 1 |
| 1981 | 4 |
| 1983 | 2 |
| 1985 | 4 |
| 1986 | 2 |
| 1988 | 6 |
| 1989 | 4 |
| 1990 | 1 |
| 1994 | 1 |
| 1996 | 1 |
| 1997 | 1 |
| 1998 | 2 |
| 1999 | 1 |
| 2004 | 2 |
| 2006 | 1 |
| 2007 | 1 |
| 2009 | 1 |
| 2016 | 1 |
| 2021 | 1 |
| 2025 | 0 |