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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1957 | 3 |
| 1959 | 6 |
| 1963 | 2 |
| 1964 | 1 |
| 1965 | 33 |
| 1966 | 60 |
| 1967 | 78 |
| 1968 | 45 |
| 1969 | 61 |
| 1970 | 29 |
| 1971 | 28 |
| 1972 | 33 |
| 1973 | 33 |
| 1974 | 30 |
| 1975 | 23 |
| 1976 | 11 |
| 1977 | 13 |
| 1978 | 30 |
| 1979 | 12 |
| 1980 | 31 |
| 1981 | 26 |
| 1982 | 19 |
| 1983 | 25 |
| 1984 | 25 |
| 1985 | 20 |
| 1986 | 31 |
| 1987 | 20 |
| 1988 | 14 |
| 1989 | 19 |
| 1990 | 20 |
| 1991 | 10 |
| 1992 | 14 |
| 1993 | 15 |
| 1994 | 25 |
| 1995 | 58 |
| 1996 | 103 |
| 1997 | 104 |
| 1998 | 112 |
| 1999 | 115 |
| 2000 | 130 |
| 2001 | 130 |
| 2002 | 141 |
| 2003 | 167 |
| 2004 | 159 |
| 2005 | 184 |
| 2006 | 199 |
| 2007 | 234 |
| 2008 | 249 |
| 2009 | 269 |
| 2010 | 263 |
| 2011 | 330 |
| 2012 | 331 |
| 2013 | 393 |
| 2014 | 380 |
| 2015 | 370 |
| 2016 | 362 |
| 2017 | 368 |
| 2018 | 368 |
| 2019 | 371 |
| 2020 | 362 |
| 2021 | 372 |
| 2022 | 461 |
| 2023 | 463 |
| 2024 | 430 |
| 2025 | 226 |