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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 188 |
| 1954 | 208 |
| 1955 | 229 |
| 1956 | 244 |
| 1957 | 252 |
| 1958 | 227 |
| 1959 | 265 |
| 1960 | 241 |
| 1961 | 204 |
| 1962 | 256 |
| 1963 | 267 |
| 1964 | 334 |
| 1965 | 302 |
| 1966 | 298 |
| 1967 | 287 |
| 1968 | 293 |
| 1969 | 304 |
| 1970 | 326 |
| 1971 | 318 |
| 1972 | 335 |
| 1973 | 348 |
| 1974 | 329 |
| 1975 | 334 |
| 1976 | 391 |
| 1977 | 377 |
| 1978 | 387 |
| 1979 | 376 |
| 1980 | 385 |
| 1981 | 363 |
| 1982 | 351 |
| 1983 | 376 |
| 1984 | 417 |
| 1985 | 435 |
| 1986 | 441 |
| 1987 | 458 |
| 1988 | 487 |
| 1989 | 497 |
| 1990 | 582 |
| 1991 | 514 |
| 1992 | 494 |
| 1993 | 480 |
| 1994 | 482 |
| 1995 | 471 |
| 1996 | 506 |
| 1997 | 473 |
| 1998 | 474 |
| 1999 | 490 |
| 2000 | 450 |
| 2001 | 455 |
| 2002 | 487 |
| 2003 | 512 |
| 2004 | 519 |
| 2005 | 552 |
| 2006 | 527 |
| 2007 | 531 |
| 2008 | 473 |
| 2009 | 477 |
| 2010 | 467 |
| 2011 | 520 |
| 2012 | 479 |
| 2013 | 519 |
| 2014 | 478 |
| 2015 | 571 |
| 2016 | 570 |
| 2017 | 567 |
| 2018 | 579 |
| 2019 | 564 |
| 2020 | 591 |
| 2021 | 58 |