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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1961 | 1 |
| 1963 | 3 |
| 1964 | 10 |
| 1965 | 2 |
| 1966 | 10 |
| 1967 | 7 |
| 1968 | 16 |
| 1969 | 8 |
| 1970 | 12 |
| 1971 | 3 |
| 1972 | 2 |
| 1973 | 2 |
| 1975 | 1 |
| 1976 | 1 |
| 1977 | 1 |
| 1978 | 6 |
| 1979 | 17 |
| 1980 | 187 |
| 1981 | 358 |
| 1982 | 362 |
| 1983 | 377 |
| 1984 | 420 |
| 1985 | 430 |
| 1986 | 477 |
| 1987 | 600 |
| 1988 | 651 |
| 1989 | 606 |
| 1990 | 659 |
| 1991 | 763 |
| 1992 | 809 |
| 1993 | 874 |
| 1994 | 861 |
| 1995 | 844 |
| 1996 | 889 |
| 1997 | 938 |
| 1998 | 935 |
| 1999 | 988 |
| 2000 | 989 |
| 2001 | 1105 |
| 2002 | 1177 |
| 2003 | 1293 |
| 2004 | 1378 |
| 2005 | 1524 |
| 2006 | 1717 |
| 2007 | 1847 |
| 2008 | 2178 |
| 2009 | 2254 |
| 2010 | 2467 |
| 2011 | 2867 |
| 2012 | 3060 |
| 2013 | 3213 |
| 2014 | 3510 |
| 2015 | 3396 |
| 2016 | 3451 |
| 2017 | 3286 |
| 2018 | 3167 |
| 2019 | 3115 |
| 2020 | 3289 |
| 2021 | 3502 |
| 2022 | 3183 |
| 2023 | 3004 |
| 2024 | 975 |