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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1949 | 2 |
| 1950 | 3 |
| 1951 | 1 |
| 1953 | 2 |
| 1956 | 1 |
| 1960 | 3 |
| 1961 | 2 |
| 1962 | 1 |
| 1966 | 2 |
| 1967 | 3 |
| 1968 | 4 |
| 1969 | 2 |
| 1970 | 1 |
| 1971 | 2 |
| 1972 | 2 |
| 1973 | 4 |
| 1974 | 2 |
| 1977 | 1 |
| 1979 | 1 |
| 1980 | 2 |
| 1981 | 1 |
| 1982 | 1 |
| 1987 | 1 |
| 1989 | 1 |
| 1990 | 2 |
| 1991 | 1 |
| 1994 | 2 |
| 1995 | 1 |
| 1997 | 1 |
| 2004 | 1 |
| 2008 | 2 |
| 2009 | 1 |
| 2012 | 1 |
| 2014 | 2 |
| 2015 | 1 |
| 2016 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |