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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 3 |
| 1965 | 10 |
| 1966 | 11 |
| 1967 | 8 |
| 1968 | 20 |
| 1969 | 16 |
| 1970 | 11 |
| 1971 | 14 |
| 1972 | 21 |
| 1973 | 20 |
| 1974 | 26 |
| 1975 | 16 |
| 1976 | 25 |
| 1977 | 20 |
| 1978 | 31 |
| 1979 | 23 |
| 1980 | 23 |
| 1981 | 18 |
| 1982 | 35 |
| 1983 | 41 |
| 1984 | 56 |
| 1985 | 69 |
| 1986 | 50 |
| 1987 | 76 |
| 1988 | 73 |
| 1989 | 82 |
| 1990 | 93 |
| 1991 | 69 |
| 1992 | 104 |
| 1993 | 88 |
| 1994 | 97 |
| 1995 | 103 |
| 1996 | 122 |
| 1997 | 121 |
| 1998 | 141 |
| 1999 | 137 |
| 2000 | 172 |
| 2001 | 190 |
| 2002 | 204 |
| 2003 | 191 |
| 2004 | 206 |
| 2005 | 288 |
| 2006 | 284 |
| 2007 | 313 |
| 2008 | 353 |
| 2009 | 346 |
| 2010 | 366 |
| 2011 | 412 |
| 2012 | 402 |
| 2013 | 424 |
| 2014 | 447 |
| 2015 | 403 |
| 2016 | 295 |
| 2017 | 258 |
| 2018 | 294 |
| 2019 | 242 |
| 2020 | 219 |
| 2021 | 184 |
| 2022 | 134 |
| 2023 | 97 |
| 2024 | 29 |