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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1956 | 1 |
| 1960 | 1 |
| 1963 | 1 |
| 1964 | 11 |
| 1965 | 22 |
| 1966 | 51 |
| 1967 | 70 |
| 1968 | 89 |
| 1969 | 176 |
| 1970 | 250 |
| 1971 | 189 |
| 1972 | 153 |
| 1973 | 235 |
| 1974 | 507 |
| 1975 | 713 |
| 1976 | 505 |
| 1977 | 454 |
| 1978 | 531 |
| 1979 | 825 |
| 1980 | 729 |
| 1981 | 449 |
| 1982 | 679 |
| 1983 | 730 |
| 1984 | 886 |
| 1985 | 843 |
| 1986 | 844 |
| 1987 | 491 |
| 1988 | 523 |
| 1989 | 633 |
| 1990 | 720 |
| 1991 | 863 |
| 1992 | 923 |
| 1993 | 1018 |
| 1994 | 1268 |
| 1995 | 1189 |
| 1996 | 1269 |
| 1997 | 1400 |
| 1998 | 1385 |
| 1999 | 1414 |
| 2000 | 1551 |
| 2001 | 1553 |
| 2002 | 1483 |
| 2003 | 2103 |
| 2004 | 2537 |
| 2005 | 3233 |
| 2006 | 3705 |
| 2007 | 3867 |
| 2008 | 4165 |
| 2009 | 5065 |
| 2010 | 5188 |
| 2011 | 5733 |
| 2012 | 5529 |
| 2013 | 5730 |
| 2014 | 5520 |
| 2015 | 5470 |
| 2016 | 5325 |
| 2017 | 5287 |
| 2018 | 5070 |
| 2019 | 4448 |
| 2020 | 4390 |
| 2021 | 4120 |
| 2022 | 3618 |
| 2023 | 3101 |
| 2024 | 1800 |