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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1966 | 4 |
| 1967 | 21 |
| 1968 | 25 |
| 1969 | 23 |
| 1970 | 23 |
| 1971 | 35 |
| 1972 | 39 |
| 1973 | 42 |
| 1974 | 72 |
| 1975 | 87 |
| 1976 | 93 |
| 1977 | 78 |
| 1978 | 86 |
| 1979 | 85 |
| 1980 | 65 |
| 1981 | 85 |
| 1982 | 107 |
| 1983 | 115 |
| 1984 | 128 |
| 1985 | 136 |
| 1986 | 174 |
| 1987 | 155 |
| 1988 | 141 |
| 1989 | 199 |
| 1990 | 209 |
| 1991 | 261 |
| 1992 | 284 |
| 1993 | 292 |
| 1994 | 281 |
| 1995 | 316 |
| 1996 | 313 |
| 1997 | 357 |
| 1998 | 336 |
| 1999 | 357 |
| 2000 | 382 |
| 2001 | 405 |
| 2002 | 387 |
| 2003 | 485 |
| 2004 | 539 |
| 2005 | 576 |
| 2006 | 666 |
| 2007 | 781 |
| 2008 | 926 |
| 2009 | 889 |
| 2010 | 949 |
| 2011 | 1004 |
| 2012 | 1002 |
| 2013 | 953 |
| 2014 | 932 |
| 2015 | 879 |
| 2016 | 877 |
| 2017 | 869 |
| 2018 | 817 |
| 2019 | 799 |
| 2020 | 606 |
| 2021 | 368 |
| 2022 | 203 |
| 2023 | 167 |
| 2024 | 60 |