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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1960 | 1 |
| 1963 | 2 |
| 1964 | 1 |
| 1965 | 1 |
| 1966 | 4 |
| 1967 | 4 |
| 1968 | 3 |
| 1969 | 4 |
| 1970 | 9 |
| 1971 | 4 |
| 1972 | 4 |
| 1973 | 3 |
| 1974 | 21 |
| 1975 | 16 |
| 1976 | 16 |
| 1977 | 43 |
| 1978 | 109 |
| 1979 | 114 |
| 1980 | 2442 |
| 1981 | 5616 |
| 1982 | 5745 |
| 1983 | 6072 |
| 1984 | 6062 |
| 1985 | 6314 |
| 1986 | 6544 |
| 1987 | 6897 |
| 1988 | 7028 |
| 1989 | 7121 |
| 1990 | 7187 |
| 1991 | 7332 |
| 1992 | 7198 |
| 1993 | 7149 |
| 1994 | 7288 |
| 1995 | 7268 |
| 1996 | 7103 |
| 1997 | 7205 |
| 1998 | 6931 |
| 1999 | 7177 |
| 2000 | 7598 |
| 2001 | 8077 |
| 2002 | 8491 |
| 2003 | 9026 |
| 2004 | 9758 |
| 2005 | 10584 |
| 2006 | 11196 |
| 2007 | 11875 |
| 2008 | 13198 |
| 2009 | 13812 |
| 2010 | 15252 |
| 2011 | 16342 |
| 2012 | 17138 |
| 2013 | 17864 |
| 2014 | 17986 |
| 2015 | 17855 |
| 2016 | 17241 |
| 2017 | 16669 |
| 2018 | 16763 |
| 2019 | 17271 |
| 2020 | 19263 |
| 2021 | 20190 |
| 2022 | 18373 |
| 2023 | 18242 |
| 2024 | 11846 |
| 2025 | 21 |