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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 1 |
| 1963 | 1 |
| 1964 | 3 |
| 1965 | 37 |
| 1966 | 51 |
| 1967 | 47 |
| 1968 | 66 |
| 1969 | 102 |
| 1970 | 78 |
| 1971 | 98 |
| 1972 | 69 |
| 1973 | 74 |
| 1974 | 86 |
| 1975 | 83 |
| 1976 | 52 |
| 1977 | 51 |
| 1978 | 57 |
| 1979 | 67 |
| 1980 | 91 |
| 1981 | 72 |
| 1982 | 84 |
| 1983 | 74 |
| 1984 | 88 |
| 1985 | 100 |
| 1986 | 102 |
| 1987 | 74 |
| 1988 | 90 |
| 1989 | 100 |
| 1990 | 94 |
| 1991 | 96 |
| 1992 | 80 |
| 1993 | 106 |
| 1994 | 90 |
| 1995 | 192 |
| 1996 | 394 |
| 1997 | 396 |
| 1998 | 326 |
| 1999 | 370 |
| 2000 | 481 |
| 2001 | 408 |
| 2002 | 366 |
| 2003 | 412 |
| 2004 | 428 |
| 2005 | 372 |
| 2006 | 432 |
| 2007 | 445 |
| 2008 | 424 |
| 2009 | 498 |
| 2010 | 456 |
| 2011 | 493 |
| 2012 | 516 |
| 2013 | 510 |
| 2014 | 527 |
| 2015 | 502 |
| 2016 | 434 |
| 2017 | 373 |
| 2018 | 362 |
| 2019 | 374 |
| 2020 | 335 |
| 2021 | 272 |
| 2022 | 127 |
| 2023 | 108 |
| 2024 | 52 |