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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1951 | 4 |
| 1952 | 2 |
| 1953 | 1 |
| 1954 | 6 |
| 1955 | 12 |
| 1956 | 6 |
| 1957 | 3 |
| 1958 | 23 |
| 1959 | 13 |
| 1960 | 9 |
| 1961 | 14 |
| 1962 | 16 |
| 1963 | 24 |
| 1964 | 18 |
| 1965 | 28 |
| 1966 | 33 |
| 1967 | 32 |
| 1968 | 35 |
| 1969 | 42 |
| 1970 | 43 |
| 1971 | 61 |
| 1972 | 50 |
| 1973 | 49 |
| 1974 | 48 |
| 1975 | 48 |
| 1976 | 48 |
| 1977 | 71 |
| 1978 | 59 |
| 1979 | 77 |
| 1980 | 75 |
| 1981 | 67 |
| 1982 | 89 |
| 1983 | 78 |
| 1984 | 81 |
| 1985 | 78 |
| 1986 | 105 |
| 1987 | 110 |
| 1988 | 123 |
| 1989 | 134 |
| 1990 | 121 |
| 1991 | 121 |
| 1992 | 142 |
| 1993 | 133 |
| 1994 | 124 |
| 1995 | 119 |
| 1996 | 131 |
| 1997 | 171 |
| 1998 | 159 |
| 1999 | 173 |
| 2000 | 227 |
| 2001 | 238 |
| 2002 | 213 |
| 2003 | 257 |
| 2004 | 270 |
| 2005 | 294 |
| 2006 | 294 |
| 2007 | 315 |
| 2008 | 328 |
| 2009 | 381 |
| 2010 | 396 |
| 2011 | 454 |
| 2012 | 455 |
| 2013 | 477 |
| 2014 | 454 |
| 2015 | 483 |
| 2016 | 462 |
| 2017 | 468 |
| 2018 | 485 |
| 2019 | 469 |
| 2020 | 524 |
| 2021 | 556 |
| 2022 | 591 |
| 2023 | 586 |
| 2024 | 218 |