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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1969 | 2 |
| 1970 | 8 |
| 1971 | 55 |
| 1972 | 65 |
| 1973 | 76 |
| 1974 | 90 |
| 1975 | 96 |
| 1976 | 72 |
| 1977 | 68 |
| 1978 | 81 |
| 1979 | 66 |
| 1980 | 88 |
| 1981 | 65 |
| 1982 | 73 |
| 1983 | 74 |
| 1984 | 79 |
| 1985 | 86 |
| 1986 | 95 |
| 1987 | 95 |
| 1988 | 109 |
| 1989 | 101 |
| 1990 | 98 |
| 1991 | 97 |
| 1992 | 112 |
| 1993 | 109 |
| 1994 | 129 |
| 1995 | 117 |
| 1996 | 121 |
| 1997 | 144 |
| 1998 | 175 |
| 1999 | 211 |
| 2000 | 186 |
| 2001 | 255 |
| 2002 | 274 |
| 2003 | 309 |
| 2004 | 311 |
| 2005 | 359 |
| 2006 | 410 |
| 2007 | 380 |
| 2008 | 402 |
| 2009 | 412 |
| 2010 | 431 |
| 2011 | 423 |
| 2012 | 454 |
| 2013 | 459 |
| 2014 | 447 |
| 2015 | 445 |
| 2016 | 408 |
| 2017 | 435 |
| 2018 | 433 |
| 2019 | 394 |
| 2020 | 407 |
| 2021 | 348 |
| 2022 | 348 |
| 2023 | 338 |
| 2024 | 294 |