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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 4 |
| 1968 | 3 |
| 1969 | 3 |
| 1970 | 7 |
| 1971 | 12 |
| 1972 | 34 |
| 1973 | 71 |
| 1974 | 144 |
| 1975 | 129 |
| 1976 | 80 |
| 1977 | 84 |
| 1978 | 91 |
| 1979 | 145 |
| 1980 | 111 |
| 1981 | 184 |
| 1982 | 258 |
| 1983 | 277 |
| 1984 | 300 |
| 1985 | 325 |
| 1986 | 310 |
| 1987 | 286 |
| 1988 | 282 |
| 1989 | 304 |
| 1990 | 337 |
| 1991 | 391 |
| 1992 | 390 |
| 1993 | 310 |
| 1994 | 321 |
| 1995 | 388 |
| 1996 | 333 |
| 1997 | 440 |
| 1998 | 485 |
| 1999 | 461 |
| 2000 | 447 |
| 2001 | 487 |
| 2002 | 572 |
| 2003 | 657 |
| 2004 | 655 |
| 2005 | 640 |
| 2006 | 665 |
| 2007 | 712 |
| 2008 | 720 |
| 2009 | 750 |
| 2010 | 801 |
| 2011 | 823 |
| 2012 | 898 |
| 2013 | 1012 |
| 2014 | 1022 |
| 2015 | 1033 |
| 2016 | 1034 |
| 2017 | 1059 |
| 2018 | 963 |
| 2019 | 839 |
| 2020 | 798 |
| 2021 | 477 |
| 2022 | 59 |
| 2023 | 26 |
| 2024 | 154 |