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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1974 | 1 |
| 1975 | 3 |
| 1976 | 12 |
| 1977 | 12 |
| 1978 | 9 |
| 1979 | 12 |
| 1980 | 18 |
| 1981 | 7 |
| 1982 | 21 |
| 1983 | 20 |
| 1984 | 16 |
| 1985 | 13 |
| 1986 | 6 |
| 1987 | 18 |
| 1988 | 19 |
| 1989 | 15 |
| 2005 | 1 |
| 2007 | 1 |
| 2008 | 2 |
| 2009 | 80 |
| 2010 | 225 |
| 2011 | 297 |
| 2012 | 387 |
| 2013 | 475 |
| 2014 | 546 |
| 2015 | 450 |
| 2016 | 480 |
| 2017 | 538 |
| 2018 | 656 |
| 2019 | 651 |
| 2020 | 470 |
| 2021 | 226 |
| 2022 | 20 |
| 2023 | 20 |
| 2024 | 102 |