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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 2 |
| 1948 | 4 |
| 1949 | 1 |
| 1950 | 2 |
| 1951 | 1 |
| 1952 | 4 |
| 1953 | 1 |
| 1954 | 1 |
| 1955 | 4 |
| 1956 | 4 |
| 1957 | 1 |
| 1958 | 8 |
| 1959 | 5 |
| 1960 | 1 |
| 1961 | 5 |
| 1962 | 9 |
| 1963 | 13 |
| 1964 | 11 |
| 1965 | 16 |
| 1966 | 63 |
| 1967 | 125 |
| 1968 | 197 |
| 1969 | 269 |
| 1970 | 354 |
| 1971 | 486 |
| 1972 | 524 |
| 1973 | 582 |
| 1974 | 559 |
| 1975 | 583 |
| 1976 | 523 |
| 1977 | 505 |
| 1978 | 448 |
| 1979 | 434 |
| 1980 | 418 |
| 1981 | 368 |
| 1982 | 392 |
| 1983 | 356 |
| 1984 | 394 |
| 1985 | 404 |
| 1986 | 430 |
| 1987 | 430 |
| 1988 | 455 |
| 1989 | 496 |
| 1990 | 562 |
| 1991 | 593 |
| 1992 | 616 |
| 1993 | 595 |
| 1994 | 606 |
| 1995 | 538 |
| 1996 | 518 |
| 1997 | 478 |
| 1998 | 451 |
| 1999 | 468 |
| 2000 | 418 |
| 2001 | 405 |
| 2002 | 324 |
| 2003 | 333 |
| 2004 | 341 |
| 2005 | 282 |
| 2006 | 257 |
| 2007 | 206 |
| 2008 | 197 |
| 2009 | 182 |
| 2010 | 146 |
| 2011 | 140 |
| 2012 | 140 |
| 2013 | 129 |
| 2014 | 91 |
| 2015 | 82 |
| 2016 | 70 |
| 2017 | 62 |
| 2018 | 49 |
| 2019 | 53 |
| 2020 | 40 |
| 2021 | 43 |
| 2022 | 33 |
| 2023 | 16 |
| 2024 | 5 |