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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 2 |
| 1959 | 2 |
| 1960 | 4 |
| 1961 | 3 |
| 1967 | 4 |
| 1968 | 4 |
| 1969 | 7 |
| 1970 | 11 |
| 1971 | 6 |
| 1972 | 4 |
| 1973 | 5 |
| 1974 | 1 |
| 1975 | 2 |
| 1976 | 1 |
| 1977 | 12 |
| 1978 | 31 |
| 1979 | 25 |
| 1980 | 30 |
| 1981 | 30 |
| 1982 | 65 |
| 1983 | 47 |
| 1984 | 64 |
| 1985 | 75 |
| 1986 | 99 |
| 1987 | 88 |
| 1988 | 164 |
| 1989 | 132 |
| 1990 | 169 |
| 1991 | 159 |
| 1992 | 170 |
| 1993 | 179 |
| 1994 | 210 |
| 1995 | 233 |
| 1996 | 219 |
| 1997 | 304 |
| 1998 | 342 |
| 1999 | 279 |
| 2000 | 261 |
| 2001 | 274 |
| 2002 | 255 |
| 2003 | 244 |
| 2004 | 222 |
| 2005 | 248 |
| 2006 | 194 |
| 2007 | 221 |
| 2008 | 266 |
| 2009 | 242 |
| 2010 | 266 |
| 2011 | 324 |
| 2012 | 395 |
| 2013 | 391 |
| 2014 | 409 |
| 2015 | 487 |
| 2016 | 513 |
| 2017 | 589 |
| 2018 | 646 |
| 2019 | 625 |
| 2020 | 440 |
| 2021 | 237 |
| 2022 | 43 |
| 2023 | 34 |
| 2024 | 34 |