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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1965 | 3 |
| 1966 | 24 |
| 1967 | 86 |
| 1968 | 103 |
| 1969 | 121 |
| 1970 | 129 |
| 1971 | 106 |
| 1972 | 185 |
| 1973 | 213 |
| 1974 | 231 |
| 1975 | 295 |
| 1976 | 366 |
| 1977 | 355 |
| 1978 | 318 |
| 1979 | 339 |
| 1980 | 292 |
| 1981 | 263 |
| 1982 | 228 |
| 1983 | 188 |
| 1984 | 154 |
| 1985 | 173 |
| 1986 | 158 |
| 1987 | 179 |
| 1988 | 159 |
| 1989 | 136 |
| 1990 | 128 |
| 1991 | 127 |
| 1992 | 99 |
| 1993 | 83 |
| 1994 | 82 |
| 1995 | 76 |
| 1996 | 62 |
| 1997 | 49 |
| 1998 | 50 |
| 1999 | 44 |
| 2000 | 48 |
| 2001 | 43 |
| 2002 | 43 |
| 2003 | 33 |
| 2004 | 45 |
| 2005 | 45 |
| 2006 | 32 |
| 2007 | 47 |
| 2008 | 55 |
| 2009 | 42 |
| 2010 | 61 |
| 2011 | 60 |
| 2012 | 56 |
| 2013 | 50 |
| 2014 | 61 |
| 2015 | 61 |
| 2016 | 49 |
| 2017 | 33 |
| 2018 | 35 |
| 2019 | 35 |
| 2020 | 38 |
| 2021 | 25 |
| 2022 | 8 |
| 2023 | 4 |
| 2024 | 2 |