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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1959 | 2 |
| 1962 | 3 |
| 1965 | 1 |
| 1966 | 16 |
| 1967 | 13 |
| 1968 | 21 |
| 1969 | 23 |
| 1970 | 26 |
| 1971 | 26 |
| 1972 | 24 |
| 1973 | 19 |
| 1974 | 40 |
| 1975 | 27 |
| 1976 | 21 |
| 1977 | 35 |
| 1978 | 37 |
| 1979 | 41 |
| 1980 | 40 |
| 1981 | 56 |
| 1982 | 62 |
| 1983 | 53 |
| 1984 | 52 |
| 1985 | 70 |
| 1986 | 67 |
| 1987 | 70 |
| 1988 | 46 |
| 1989 | 48 |
| 1990 | 36 |
| 1991 | 42 |
| 1992 | 36 |
| 1993 | 47 |
| 1994 | 49 |
| 1995 | 118 |
| 1996 | 231 |
| 1997 | 279 |
| 1998 | 259 |
| 1999 | 295 |
| 2000 | 302 |
| 2001 | 279 |
| 2002 | 236 |
| 2003 | 256 |
| 2004 | 262 |
| 2005 | 309 |
| 2006 | 313 |
| 2007 | 329 |
| 2008 | 313 |
| 2009 | 288 |
| 2010 | 310 |
| 2011 | 333 |
| 2012 | 316 |
| 2013 | 331 |
| 2014 | 274 |
| 2015 | 256 |
| 2016 | 235 |
| 2017 | 226 |
| 2018 | 210 |
| 2019 | 185 |
| 2020 | 142 |
| 2021 | 97 |
| 2022 | 10 |
| 2024 | 0 |