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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1966 | 1 |
| 1967 | 8 |
| 1968 | 20 |
| 1969 | 29 |
| 1970 | 38 |
| 1971 | 45 |
| 1972 | 45 |
| 1973 | 42 |
| 1974 | 44 |
| 1975 | 47 |
| 1976 | 46 |
| 1977 | 46 |
| 1978 | 44 |
| 1979 | 40 |
| 1980 | 36 |
| 1981 | 41 |
| 1982 | 26 |
| 1983 | 34 |
| 1984 | 34 |
| 1985 | 32 |
| 1986 | 30 |
| 1987 | 27 |
| 1988 | 43 |
| 1989 | 39 |
| 1990 | 53 |
| 1991 | 35 |
| 1992 | 67 |
| 1993 | 65 |
| 1994 | 69 |
| 1995 | 69 |
| 1996 | 101 |
| 1997 | 114 |
| 1998 | 126 |
| 1999 | 153 |
| 2000 | 167 |
| 2001 | 180 |
| 2002 | 189 |
| 2003 | 201 |
| 2004 | 268 |
| 2005 | 251 |
| 2006 | 273 |
| 2007 | 253 |
| 2008 | 288 |
| 2009 | 266 |
| 2010 | 344 |
| 2011 | 332 |
| 2012 | 381 |
| 2013 | 376 |
| 2014 | 345 |
| 2015 | 369 |
| 2016 | 318 |
| 2017 | 317 |
| 2018 | 297 |
| 2019 | 263 |
| 2020 | 210 |
| 2021 | 152 |
| 2022 | 100 |
| 2023 | 56 |
| 2024 | 37 |