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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 1 |
| 1968 | 5 |
| 1971 | 3 |
| 1974 | 1 |
| 1977 | 14 |
| 1978 | 71 |
| 1979 | 100 |
| 1980 | 89 |
| 1981 | 102 |
| 1982 | 164 |
| 1983 | 106 |
| 1984 | 142 |
| 1985 | 134 |
| 1986 | 111 |
| 1987 | 123 |
| 1988 | 147 |
| 1989 | 162 |
| 1990 | 193 |
| 1991 | 248 |
| 1992 | 242 |
| 1993 | 222 |
| 1994 | 254 |
| 1995 | 247 |
| 1996 | 228 |
| 1997 | 170 |
| 1998 | 172 |
| 1999 | 151 |
| 2000 | 169 |
| 2001 | 202 |
| 2002 | 200 |
| 2003 | 199 |
| 2004 | 173 |
| 2005 | 162 |
| 2006 | 222 |
| 2007 | 273 |
| 2008 | 307 |
| 2009 | 309 |
| 2010 | 325 |
| 2011 | 296 |
| 2012 | 276 |
| 2013 | 307 |
| 2014 | 249 |
| 2015 | 207 |
| 2016 | 191 |
| 2017 | 167 |
| 2018 | 190 |
| 2019 | 153 |
| 2020 | 92 |
| 2021 | 35 |
| 2022 | 43 |
| 2023 | 36 |
| 2024 | 25 |