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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1968 | 1 |
| 1969 | 7 |
| 1970 | 2 |
| 1976 | 10 |
| 1977 | 29 |
| 1978 | 33 |
| 1979 | 36 |
| 1980 | 32 |
| 1981 | 45 |
| 1982 | 39 |
| 1983 | 31 |
| 1984 | 50 |
| 1985 | 49 |
| 1986 | 49 |
| 1987 | 45 |
| 1988 | 47 |
| 1989 | 67 |
| 1990 | 52 |
| 1991 | 60 |
| 1992 | 58 |
| 1993 | 88 |
| 1994 | 138 |
| 1995 | 156 |
| 1996 | 147 |
| 1997 | 158 |
| 1998 | 151 |
| 1999 | 164 |
| 2000 | 156 |
| 2001 | 160 |
| 2002 | 196 |
| 2003 | 221 |
| 2004 | 211 |
| 2005 | 250 |
| 2006 | 213 |
| 2007 | 243 |
| 2008 | 239 |
| 2009 | 276 |
| 2010 | 279 |
| 2011 | 309 |
| 2012 | 293 |
| 2013 | 297 |
| 2014 | 296 |
| 2015 | 324 |
| 2016 | 282 |
| 2017 | 241 |
| 2018 | 251 |
| 2019 | 238 |
| 2020 | 207 |
| 2021 | 171 |
| 2022 | 189 |
| 2023 | 185 |
| 2024 | 181 |