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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1948 | 1 |
| 1949 | 1 |
| 1950 | 1 |
| 1952 | 4 |
| 1953 | 4 |
| 1954 | 4 |
| 1955 | 5 |
| 1956 | 5 |
| 1957 | 5 |
| 1958 | 1 |
| 1959 | 6 |
| 1960 | 4 |
| 1962 | 2 |
| 1963 | 3 |
| 1964 | 4 |
| 1965 | 2 |
| 1967 | 12 |
| 1968 | 17 |
| 1969 | 27 |
| 1970 | 39 |
| 1971 | 34 |
| 1972 | 46 |
| 1973 | 73 |
| 1974 | 100 |
| 1975 | 127 |
| 1976 | 196 |
| 1977 | 229 |
| 1978 | 215 |
| 1979 | 179 |
| 1980 | 130 |
| 1981 | 156 |
| 1982 | 113 |
| 1983 | 149 |
| 1984 | 106 |
| 1985 | 127 |
| 1986 | 114 |
| 1987 | 121 |
| 1988 | 153 |
| 1989 | 200 |
| 1990 | 267 |
| 1991 | 374 |
| 1992 | 417 |
| 1993 | 441 |
| 1994 | 470 |
| 1995 | 538 |
| 1996 | 604 |
| 1997 | 594 |
| 1998 | 603 |
| 1999 | 654 |
| 2000 | 675 |
| 2001 | 690 |
| 2002 | 679 |
| 2003 | 708 |
| 2004 | 719 |
| 2005 | 816 |
| 2006 | 982 |
| 2007 | 1017 |
| 2008 | 1047 |
| 2009 | 1006 |
| 2010 | 951 |
| 2011 | 974 |
| 2012 | 921 |
| 2013 | 872 |
| 2014 | 831 |
| 2015 | 761 |
| 2016 | 703 |
| 2017 | 628 |
| 2018 | 631 |
| 2019 | 497 |
| 2020 | 408 |
| 2021 | 230 |
| 2022 | 99 |
| 2023 | 63 |
| 2024 | 17 |