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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1960 | 1 |
| 1961 | 1 |
| 1963 | 2 |
| 1968 | 1 |
| 1969 | 1 |
| 1971 | 2 |
| 1972 | 2 |
| 1975 | 3 |
| 1977 | 3 |
| 1979 | 2 |
| 1980 | 3 |
| 1981 | 7 |
| 1982 | 1 |
| 1983 | 3 |
| 1984 | 1 |
| 1985 | 4 |
| 1986 | 3 |
| 1987 | 9 |
| 1988 | 13 |
| 1989 | 13 |
| 1990 | 18 |
| 1991 | 20 |
| 1992 | 36 |
| 1993 | 40 |
| 1994 | 38 |
| 1995 | 39 |
| 1996 | 40 |
| 1997 | 42 |
| 1998 | 46 |
| 1999 | 44 |
| 2000 | 56 |
| 2001 | 84 |
| 2002 | 71 |
| 2003 | 72 |
| 2004 | 102 |
| 2005 | 103 |
| 2006 | 130 |
| 2007 | 144 |
| 2008 | 165 |
| 2009 | 190 |
| 2010 | 238 |
| 2011 | 247 |
| 2012 | 302 |
| 2013 | 304 |
| 2014 | 337 |
| 2015 | 347 |
| 2016 | 359 |
| 2017 | 334 |
| 2018 | 325 |
| 2019 | 352 |
| 2020 | 437 |
| 2021 | 465 |
| 2022 | 394 |
| 2023 | 157 |