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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1973 | 4 |
| 1974 | 15 |
| 1975 | 30 |
| 1976 | 21 |
| 1977 | 34 |
| 1978 | 32 |
| 1979 | 33 |
| 1980 | 45 |
| 1981 | 25 |
| 1982 | 32 |
| 1983 | 29 |
| 1984 | 13 |
| 1985 | 17 |
| 1986 | 9 |
| 1987 | 19 |
| 1988 | 19 |
| 1989 | 16 |
| 1990 | 19 |
| 1991 | 22 |
| 1992 | 16 |
| 1993 | 26 |
| 1994 | 32 |
| 1995 | 33 |
| 1996 | 28 |
| 1997 | 18 |
| 1998 | 24 |
| 1999 | 33 |
| 2000 | 43 |
| 2001 | 36 |
| 2002 | 52 |
| 2003 | 86 |
| 2004 | 81 |
| 2005 | 86 |
| 2006 | 91 |
| 2007 | 119 |
| 2008 | 158 |
| 2009 | 192 |
| 2010 | 195 |
| 2011 | 224 |
| 2012 | 268 |
| 2013 | 257 |
| 2014 | 255 |
| 2015 | 269 |
| 2016 | 246 |
| 2017 | 245 |
| 2018 | 222 |
| 2019 | 214 |
| 2020 | 138 |
| 2021 | 91 |
| 2022 | 140 |
| 2023 | 107 |
| 2024 | 50 |