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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1962 | 1 |
| 1966 | 1 |
| 1967 | 4 |
| 1968 | 14 |
| 1969 | 26 |
| 1970 | 13 |
| 1971 | 24 |
| 1972 | 9 |
| 1973 | 35 |
| 1974 | 44 |
| 1975 | 43 |
| 1976 | 35 |
| 1977 | 33 |
| 1978 | 57 |
| 1979 | 51 |
| 1980 | 50 |
| 1981 | 55 |
| 1982 | 48 |
| 1983 | 44 |
| 1984 | 45 |
| 1985 | 50 |
| 1986 | 51 |
| 1987 | 56 |
| 1988 | 73 |
| 1989 | 70 |
| 1990 | 132 |
| 1991 | 142 |
| 1992 | 174 |
| 1993 | 136 |
| 1994 | 121 |
| 1995 | 104 |
| 1996 | 127 |
| 1997 | 115 |
| 1998 | 149 |
| 1999 | 154 |
| 2000 | 174 |
| 2001 | 167 |
| 2002 | 247 |
| 2003 | 251 |
| 2004 | 334 |
| 2005 | 333 |
| 2006 | 315 |
| 2007 | 305 |
| 2008 | 354 |
| 2009 | 418 |
| 2010 | 407 |
| 2011 | 475 |
| 2012 | 549 |
| 2013 | 535 |
| 2014 | 614 |
| 2015 | 538 |
| 2016 | 522 |
| 2017 | 489 |
| 2018 | 472 |
| 2019 | 440 |
| 2020 | 365 |
| 2021 | 175 |
| 2022 | 18 |
| 2023 | 4 |
| 2024 | 3 |