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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1956 | 2 |
| 1962 | 1 |
| 1964 | 1 |
| 1965 | 14 |
| 1966 | 3 |
| 1967 | 16 |
| 1968 | 19 |
| 1969 | 23 |
| 1970 | 12 |
| 1971 | 24 |
| 1972 | 33 |
| 1973 | 18 |
| 1974 | 17 |
| 1975 | 9 |
| 1976 | 23 |
| 1977 | 11 |
| 1978 | 14 |
| 1979 | 7 |
| 1980 | 17 |
| 1981 | 11 |
| 1982 | 23 |
| 1983 | 25 |
| 1984 | 25 |
| 1985 | 50 |
| 1986 | 67 |
| 1987 | 62 |
| 1988 | 58 |
| 1989 | 49 |
| 1990 | 89 |
| 1991 | 151 |
| 1992 | 124 |
| 1993 | 134 |
| 1994 | 208 |
| 1995 | 188 |
| 1996 | 246 |
| 1997 | 283 |
| 1998 | 274 |
| 1999 | 338 |
| 2000 | 410 |
| 2001 | 467 |
| 2002 | 455 |
| 2003 | 543 |
| 2004 | 627 |
| 2005 | 640 |
| 2006 | 703 |
| 2007 | 747 |
| 2008 | 715 |
| 2009 | 780 |
| 2010 | 649 |
| 2011 | 704 |
| 2012 | 675 |
| 2013 | 618 |
| 2014 | 516 |
| 2015 | 516 |
| 2016 | 472 |
| 2017 | 521 |
| 2018 | 433 |
| 2019 | 401 |
| 2020 | 436 |
| 2021 | 371 |
| 2022 | 350 |
| 2023 | 277 |
| 2024 | 73 |