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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 1 |
| 1952 | 13 |
| 1953 | 18 |
| 1954 | 10 |
| 1955 | 15 |
| 1956 | 12 |
| 1957 | 5 |
| 1958 | 8 |
| 1959 | 2 |
| 1964 | 1 |
| 1965 | 33 |
| 1966 | 58 |
| 1967 | 83 |
| 1968 | 79 |
| 1969 | 128 |
| 1970 | 146 |
| 1971 | 187 |
| 1972 | 270 |
| 1973 | 307 |
| 1974 | 296 |
| 1975 | 248 |
| 1976 | 225 |
| 1977 | 242 |
| 1978 | 292 |
| 1979 | 319 |
| 1980 | 298 |
| 1981 | 360 |
| 1982 | 318 |
| 1983 | 419 |
| 1984 | 342 |
| 1985 | 358 |
| 1986 | 347 |
| 1987 | 340 |
| 1988 | 365 |
| 1989 | 368 |
| 1990 | 426 |
| 1991 | 385 |
| 1992 | 422 |
| 1993 | 436 |
| 1994 | 449 |
| 1995 | 395 |
| 1996 | 430 |
| 1997 | 536 |
| 1998 | 509 |
| 1999 | 566 |
| 2000 | 502 |
| 2001 | 600 |
| 2002 | 633 |
| 2003 | 717 |
| 2004 | 749 |
| 2005 | 776 |
| 2006 | 850 |
| 2007 | 789 |
| 2008 | 911 |
| 2009 | 876 |
| 2010 | 903 |
| 2011 | 1109 |
| 2012 | 1116 |
| 2013 | 1072 |
| 2014 | 1011 |
| 2015 | 944 |
| 2016 | 872 |
| 2017 | 782 |
| 2018 | 714 |
| 2019 | 746 |
| 2020 | 646 |
| 2021 | 508 |
| 2022 | 332 |
| 2023 | 62 |