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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1965 | 17 |
| 1966 | 33 |
| 1967 | 61 |
| 1968 | 52 |
| 1969 | 66 |
| 1970 | 68 |
| 1971 | 83 |
| 1972 | 106 |
| 1973 | 117 |
| 1974 | 143 |
| 1975 | 113 |
| 1976 | 108 |
| 1977 | 124 |
| 1978 | 107 |
| 1979 | 99 |
| 1980 | 94 |
| 1981 | 84 |
| 1982 | 93 |
| 1983 | 87 |
| 1984 | 82 |
| 1985 | 96 |
| 1986 | 80 |
| 1987 | 80 |
| 1988 | 87 |
| 1989 | 96 |
| 1990 | 131 |
| 1991 | 103 |
| 1992 | 122 |
| 1993 | 123 |
| 1994 | 156 |
| 1995 | 164 |
| 1996 | 165 |
| 1997 | 158 |
| 1998 | 193 |
| 1999 | 181 |
| 2000 | 237 |
| 2001 | 204 |
| 2002 | 217 |
| 2003 | 186 |
| 2004 | 251 |
| 2005 | 274 |
| 2006 | 281 |
| 2007 | 268 |
| 2008 | 291 |
| 2009 | 333 |
| 2010 | 392 |
| 2011 | 403 |
| 2012 | 413 |
| 2013 | 481 |
| 2014 | 451 |
| 2015 | 446 |
| 2016 | 475 |
| 2017 | 444 |
| 2018 | 416 |
| 2019 | 404 |
| 2020 | 418 |
| 2021 | 366 |
| 2022 | 306 |
| 2023 | 208 |
| 2024 | 67 |