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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1953 | 1 |
| 1955 | 2 |
| 1956 | 2 |
| 1959 | 1 |
| 1965 | 4 |
| 1966 | 11 |
| 1967 | 38 |
| 1968 | 34 |
| 1969 | 37 |
| 1970 | 62 |
| 1971 | 83 |
| 1972 | 78 |
| 1973 | 139 |
| 1974 | 113 |
| 1975 | 142 |
| 1976 | 112 |
| 1977 | 166 |
| 1978 | 164 |
| 1979 | 171 |
| 1980 | 233 |
| 1981 | 217 |
| 1982 | 280 |
| 1983 | 312 |
| 1984 | 313 |
| 1985 | 338 |
| 1986 | 474 |
| 1987 | 416 |
| 1988 | 480 |
| 1989 | 508 |
| 1990 | 605 |
| 1991 | 620 |
| 1992 | 752 |
| 1993 | 771 |
| 1994 | 829 |
| 1995 | 891 |
| 1996 | 902 |
| 1997 | 842 |
| 1998 | 953 |
| 1999 | 1004 |
| 2000 | 1006 |
| 2001 | 1055 |
| 2002 | 1063 |
| 2003 | 1103 |
| 2004 | 1065 |
| 2005 | 1306 |
| 2006 | 1437 |
| 2007 | 1473 |
| 2008 | 1604 |
| 2009 | 1720 |
| 2010 | 1830 |
| 2011 | 2064 |
| 2012 | 2249 |
| 2013 | 2391 |
| 2014 | 2506 |
| 2015 | 2685 |
| 2016 | 2500 |
| 2017 | 2529 |
| 2018 | 2507 |
| 2019 | 2582 |
| 2020 | 2390 |
| 2021 | 1854 |
| 2022 | 293 |
| 2023 | 75 |
| 2024 | 513 |