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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1964 | 3 |
| 1973 | 1 |
| 1974 | 4 |
| 1975 | 39 |
| 1976 | 47 |
| 1977 | 101 |
| 1978 | 100 |
| 1979 | 148 |
| 1980 | 177 |
| 1981 | 204 |
| 1982 | 201 |
| 1983 | 206 |
| 1984 | 219 |
| 1985 | 230 |
| 1986 | 220 |
| 1987 | 167 |
| 1988 | 191 |
| 1989 | 174 |
| 1990 | 187 |
| 1991 | 203 |
| 1992 | 235 |
| 1993 | 201 |
| 1994 | 216 |
| 1995 | 221 |
| 1996 | 245 |
| 1997 | 240 |
| 1998 | 236 |
| 1999 | 257 |
| 2000 | 307 |
| 2001 | 270 |
| 2002 | 304 |
| 2003 | 341 |
| 2004 | 356 |
| 2005 | 424 |
| 2006 | 418 |
| 2007 | 522 |
| 2008 | 460 |
| 2009 | 489 |
| 2010 | 526 |
| 2011 | 557 |
| 2012 | 542 |
| 2013 | 555 |
| 2014 | 561 |
| 2015 | 472 |
| 2016 | 479 |
| 2017 | 481 |
| 2018 | 457 |
| 2019 | 427 |
| 2020 | 460 |
| 2021 | 475 |
| 2022 | 458 |
| 2023 | 377 |
| 2024 | 151 |