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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 26 |
| 1969 | 67 |
| 1970 | 99 |
| 1971 | 73 |
| 1972 | 98 |
| 1973 | 108 |
| 1974 | 66 |
| 1975 | 92 |
| 1976 | 53 |
| 1977 | 56 |
| 1978 | 61 |
| 1979 | 57 |
| 1980 | 72 |
| 1981 | 54 |
| 1982 | 62 |
| 1983 | 58 |
| 1984 | 84 |
| 1985 | 92 |
| 1986 | 113 |
| 1987 | 103 |
| 1988 | 138 |
| 1989 | 118 |
| 1990 | 121 |
| 1991 | 112 |
| 1992 | 152 |
| 1993 | 153 |
| 1994 | 142 |
| 1995 | 142 |
| 1996 | 157 |
| 1997 | 165 |
| 1998 | 157 |
| 1999 | 167 |
| 2000 | 164 |
| 2001 | 173 |
| 2002 | 169 |
| 2003 | 180 |
| 2004 | 196 |
| 2005 | 201 |
| 2006 | 268 |
| 2007 | 296 |
| 2008 | 287 |
| 2009 | 324 |
| 2010 | 338 |
| 2011 | 395 |
| 2012 | 364 |
| 2013 | 358 |
| 2014 | 272 |
| 2015 | 233 |
| 2016 | 204 |
| 2017 | 265 |
| 2018 | 261 |
| 2019 | 236 |
| 2020 | 170 |
| 2021 | 199 |
| 2022 | 140 |
| 2023 | 0 |