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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 2 |
| 1949 | 1 |
| 1950 | 2 |
| 1951 | 1 |
| 1953 | 1 |
| 1956 | 3 |
| 1957 | 2 |
| 1959 | 1 |
| 1960 | 1 |
| 1962 | 3 |
| 1965 | 1 |
| 1966 | 1 |
| 1967 | 2 |
| 1971 | 1 |
| 1976 | 1 |
| 1981 | 1 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 1 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 1 |
| 1988 | 1 |
| 1989 | 1 |
| 1990 | 1 |
| 1992 | 2 |
| 1995 | 2 |
| 1996 | 1 |
| 2000 | 1 |
| 2002 | 2 |
| 2009 | 1 |
| 2011 | 2 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 2 |
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 1 |
| 2021 | 4 |
| 2022 | 5 |