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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 | 2443 |
| 1981 | 5616 |
| 1982 | 5745 |
| 1983 | 6072 |
| 1984 | 6062 |
| 1985 | 6314 |
| 1986 | 6544 |
| 1987 | 6897 |
| 1988 | 7028 |
| 1989 | 7121 |
| 1990 | 7187 |
| 1991 | 7333 |
| 1992 | 7198 |
| 1993 | 7149 |
| 1994 | 7288 |
| 1995 | 7269 |
| 1996 | 7104 |
| 1997 | 7206 |
| 1998 | 6933 |
| 1999 | 7179 |
| 2000 | 7600 |
| 2001 | 8078 |
| 2002 | 8494 |
| 2003 | 9032 |
| 2004 | 9773 |
| 2005 | 10595 |
| 2006 | 11215 |
| 2007 | 11922 |
| 2008 | 13264 |
| 2009 | 13871 |
| 2010 | 15295 |
| 2011 | 16343 |
| 2012 | 17134 |
| 2013 | 17851 |
| 2014 | 18001 |
| 2015 | 17849 |
| 2016 | 17258 |
| 2017 | 16698 |
| 2018 | 16798 |
| 2019 | 17314 |
| 2020 | 19345 |
| 2021 | 20301 |
| 2022 | 18578 |
| 2023 | 18639 |
| 2024 | 15672 |
| 2025 | 5577 |