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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1953 | 1 |
| 1954 | 2 |
| 1956 | 4 |
| 1957 | 2 |
| 1958 | 5 |
| 1959 | 2 |
| 1960 | 2 |
| 1962 | 4 |
| 1968 | 3 |
| 1969 | 3 |
| 1970 | 3 |
| 1971 | 4 |
| 1973 | 2 |
| 1974 | 4 |
| 1975 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1980 | 1 |
| 1981 | 6 |
| 1983 | 8 |
| 1988 | 2 |
| 1990 | 3 |
| 1991 | 3 |
| 1992 | 1 |
| 1993 | 5 |
| 1994 | 1 |
| 1995 | 3 |
| 1996 | 4 |
| 1997 | 2 |
| 1999 | 3 |
| 2001 | 2 |
| 2010 | 1 |
| 2016 | 2 |
| 2023 | 1 |
| 2025 | 0 |