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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1937 | 1 |
| 1947 | 1 |
| 1952 | 1 |
| 1953 | 2 |
| 1955 | 2 |
| 1958 | 2 |
| 1959 | 1 |
| 1964 | 1 |
| 1970 | 1 |
| 1973 | 1 |
| 1979 | 2 |
| 1980 | 1 |
| 1981 | 1 |
| 1983 | 1 |
| 1986 | 1 |
| 1987 | 2 |
| 1990 | 2 |
| 1991 | 1 |
| 1993 | 2 |
| 1995 | 2 |
| 1999 | 1 |
| 2004 | 2 |
| 2006 | 1 |
| 2008 | 2 |
| 2012 | 2 |
| 2013 | 3 |
| 2014 | 10 |
| 2015 | 13 |
| 2016 | 13 |
| 2017 | 16 |
| 2018 | 18 |
| 2019 | 17 |
| 2020 | 19 |
| 2021 | 20 |
| 2022 | 18 |
| 2023 | 16 |
| 2024 | 6 |