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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1963 | 1 |
| 1964 | 1 |
| 1965 | 4 |
| 1966 | 10 |
| 1967 | 20 |
| 1968 | 42 |
| 1969 | 48 |
| 1970 | 55 |
| 1971 | 39 |
| 1972 | 41 |
| 1973 | 34 |
| 1974 | 20 |
| 1975 | 18 |
| 1976 | 30 |
| 1977 | 28 |
| 1978 | 25 |
| 1979 | 41 |
| 1980 | 49 |
| 1981 | 63 |
| 1982 | 84 |
| 1983 | 158 |
| 1984 | 96 |
| 1985 | 89 |
| 1986 | 81 |
| 1987 | 110 |
| 1988 | 130 |
| 1989 | 147 |
| 1990 | 122 |
| 1991 | 153 |
| 1992 | 123 |
| 1993 | 112 |
| 1994 | 95 |
| 1995 | 239 |
| 1996 | 387 |
| 1997 | 443 |
| 1998 | 494 |
| 1999 | 552 |
| 2000 | 555 |
| 2001 | 480 |
| 2002 | 529 |
| 2003 | 553 |
| 2004 | 610 |
| 2005 | 581 |
| 2006 | 646 |
| 2007 | 673 |
| 2008 | 816 |
| 2009 | 921 |
| 2010 | 910 |
| 2011 | 963 |
| 2012 | 999 |
| 2013 | 1110 |
| 2014 | 1014 |
| 2015 | 1041 |
| 2016 | 1107 |
| 2017 | 1063 |
| 2018 | 997 |
| 2019 | 1061 |
| 2020 | 827 |
| 2021 | 383 |
| 2022 | 47 |
| 2023 | 15 |
| 2024 | 5 |