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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 9 |
| 1960 | 12 |
| 1961 | 12 |
| 1962 | 13 |
| 1964 | 5 |
| 1965 | 24 |
| 1966 | 38 |
| 1967 | 50 |
| 1968 | 55 |
| 1969 | 62 |
| 1970 | 86 |
| 1971 | 44 |
| 1972 | 40 |
| 1973 | 21 |
| 1974 | 41 |
| 1975 | 44 |
| 1976 | 29 |
| 1977 | 42 |
| 1978 | 35 |
| 1979 | 42 |
| 1980 | 31 |
| 1981 | 47 |
| 1982 | 56 |
| 1983 | 62 |
| 1984 | 74 |
| 1985 | 102 |
| 1986 | 96 |
| 1987 | 97 |
| 1988 | 129 |
| 1989 | 128 |
| 1990 | 165 |
| 1991 | 215 |
| 1992 | 223 |
| 1993 | 283 |
| 1994 | 336 |
| 1995 | 323 |
| 1996 | 248 |
| 1997 | 246 |
| 1998 | 259 |
| 1999 | 278 |
| 2000 | 256 |
| 2001 | 253 |
| 2002 | 282 |
| 2003 | 310 |
| 2004 | 402 |
| 2005 | 386 |
| 2006 | 342 |
| 2007 | 380 |
| 2008 | 360 |
| 2009 | 380 |
| 2010 | 380 |
| 2011 | 390 |
| 2012 | 437 |
| 2013 | 392 |
| 2014 | 414 |
| 2015 | 389 |
| 2016 | 388 |
| 2017 | 381 |
| 2018 | 340 |
| 2019 | 317 |
| 2020 | 313 |
| 2021 | 232 |
| 2022 | 125 |
| 2023 | 112 |
| 2024 | 75 |