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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 2 |
| 1958 | 1 |
| 1959 | 1 |
| 1960 | 2 |
| 1961 | 1 |
| 1965 | 1 |
| 1966 | 22 |
| 1967 | 14 |
| 1968 | 18 |
| 1969 | 25 |
| 1970 | 38 |
| 1971 | 46 |
| 1972 | 48 |
| 1973 | 54 |
| 1974 | 48 |
| 1975 | 38 |
| 1976 | 53 |
| 1977 | 63 |
| 1978 | 59 |
| 1979 | 73 |
| 1980 | 74 |
| 1981 | 68 |
| 1982 | 104 |
| 1983 | 98 |
| 1984 | 112 |
| 1985 | 114 |
| 1986 | 115 |
| 1987 | 103 |
| 1988 | 125 |
| 1989 | 142 |
| 1990 | 136 |
| 1991 | 155 |
| 1992 | 144 |
| 1993 | 172 |
| 1994 | 153 |
| 1995 | 156 |
| 1996 | 182 |
| 1997 | 150 |
| 1998 | 168 |
| 1999 | 142 |
| 2000 | 174 |
| 2001 | 183 |
| 2002 | 172 |
| 2003 | 177 |
| 2004 | 255 |
| 2005 | 328 |
| 2006 | 305 |
| 2007 | 358 |
| 2008 | 406 |
| 2009 | 421 |
| 2010 | 396 |
| 2011 | 486 |
| 2012 | 655 |
| 2013 | 521 |
| 2014 | 557 |
| 2015 | 619 |
| 2016 | 528 |
| 2017 | 529 |
| 2018 | 607 |
| 2019 | 556 |
| 2020 | 457 |
| 2021 | 297 |
| 2022 | 45 |
| 2023 | 12 |
| 2024 | 48 |