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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1952 | 4 |
| 1953 | 4 |
| 1954 | 3 |
| 1955 | 3 |
| 1959 | 6 |
| 1960 | 5 |
| 1961 | 14 |
| 1962 | 15 |
| 1964 | 2 |
| 1965 | 2 |
| 1966 | 14 |
| 1967 | 31 |
| 1968 | 49 |
| 1969 | 42 |
| 1970 | 46 |
| 1971 | 88 |
| 1972 | 182 |
| 1973 | 167 |
| 1974 | 210 |
| 1975 | 169 |
| 1976 | 127 |
| 1977 | 128 |
| 1978 | 126 |
| 1979 | 140 |
| 1980 | 156 |
| 1981 | 174 |
| 1982 | 190 |
| 1983 | 218 |
| 1984 | 213 |
| 1985 | 201 |
| 1986 | 196 |
| 1987 | 206 |
| 1988 | 219 |
| 1989 | 252 |
| 1990 | 291 |
| 1991 | 335 |
| 1992 | 376 |
| 1993 | 414 |
| 1994 | 327 |
| 1995 | 347 |
| 1996 | 409 |
| 1997 | 393 |
| 1998 | 441 |
| 1999 | 351 |
| 2000 | 303 |
| 2001 | 368 |
| 2002 | 424 |
| 2003 | 384 |
| 2004 | 389 |
| 2005 | 384 |
| 2006 | 414 |
| 2007 | 416 |
| 2008 | 419 |
| 2009 | 377 |
| 2010 | 389 |
| 2011 | 391 |
| 2012 | 402 |
| 2013 | 367 |
| 2014 | 346 |
| 2015 | 324 |
| 2016 | 312 |
| 2017 | 295 |
| 2018 | 290 |
| 2019 | 354 |
| 2020 | 267 |
| 2021 | 139 |
| 2022 | 16 |
| 2023 | 8 |
| 2024 | 5 |