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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1972 | 20 |
| 1973 | 13 |
| 1974 | 24 |
| 1975 | 29 |
| 1976 | 28 |
| 1977 | 31 |
| 1978 | 34 |
| 1979 | 27 |
| 1980 | 40 |
| 1981 | 32 |
| 1982 | 17 |
| 1983 | 32 |
| 1984 | 40 |
| 1985 | 42 |
| 1986 | 35 |
| 1987 | 44 |
| 1988 | 36 |
| 1989 | 45 |
| 1990 | 42 |
| 1991 | 36 |
| 1992 | 45 |
| 1993 | 64 |
| 1994 | 66 |
| 1995 | 77 |
| 1996 | 62 |
| 1997 | 95 |
| 1998 | 102 |
| 1999 | 79 |
| 2000 | 137 |
| 2001 | 114 |
| 2002 | 117 |
| 2003 | 134 |
| 2004 | 160 |
| 2005 | 169 |
| 2006 | 203 |
| 2007 | 212 |
| 2008 | 229 |
| 2009 | 288 |
| 2010 | 411 |
| 2011 | 356 |
| 2012 | 315 |
| 2013 | 309 |
| 2014 | 342 |
| 2015 | 421 |
| 2016 | 403 |
| 2017 | 289 |
| 2018 | 255 |
| 2019 | 318 |
| 2020 | 353 |
| 2021 | 299 |
| 2022 | 218 |
| 2023 | 369 |
| 2024 | 178 |