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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 1 |
| 1971 | 1 |
| 1974 | 1 |
| 1975 | 1 |
| 1976 | 1 |
| 1977 | 3 |
| 1978 | 3 |
| 1979 | 2 |
| 1981 | 2 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 2 |
| 1985 | 4 |
| 1986 | 5 |
| 1987 | 10 |
| 1988 | 10 |
| 1989 | 9 |
| 1990 | 10 |
| 1991 | 9 |
| 1992 | 10 |
| 1993 | 14 |
| 1994 | 15 |
| 1995 | 14 |
| 1996 | 23 |
| 1997 | 30 |
| 1998 | 33 |
| 1999 | 49 |
| 2000 | 54 |
| 2001 | 58 |
| 2002 | 60 |
| 2003 | 94 |
| 2004 | 95 |
| 2005 | 124 |
| 2006 | 119 |
| 2007 | 191 |
| 2008 | 233 |
| 2009 | 251 |
| 2010 | 282 |
| 2011 | 307 |
| 2012 | 336 |
| 2013 | 345 |
| 2014 | 368 |
| 2015 | 404 |
| 2016 | 412 |
| 2017 | 457 |
| 2018 | 538 |
| 2019 | 598 |
| 2020 | 666 |
| 2021 | 697 |
| 2022 | 633 |
| 2023 | 566 |