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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 39 |
| 1968 | 57 |
| 1969 | 70 |
| 1970 | 77 |
| 1971 | 99 |
| 1972 | 95 |
| 1973 | 115 |
| 1974 | 100 |
| 1975 | 104 |
| 1976 | 88 |
| 1977 | 73 |
| 1978 | 97 |
| 1979 | 86 |
| 1980 | 87 |
| 1981 | 86 |
| 1982 | 93 |
| 1983 | 98 |
| 1984 | 102 |
| 1985 | 107 |
| 1986 | 129 |
| 1987 | 128 |
| 1988 | 127 |
| 1989 | 142 |
| 1990 | 148 |
| 1991 | 145 |
| 1992 | 189 |
| 1993 | 372 |
| 1994 | 299 |
| 1995 | 266 |
| 1996 | 257 |
| 1997 | 282 |
| 1998 | 318 |
| 1999 | 372 |
| 2000 | 348 |
| 2001 | 315 |
| 2002 | 345 |
| 2003 | 388 |
| 2004 | 319 |
| 2005 | 404 |
| 2006 | 417 |
| 2007 | 419 |
| 2008 | 419 |
| 2009 | 418 |
| 2010 | 449 |
| 2011 | 405 |
| 2012 | 361 |
| 2013 | 348 |
| 2014 | 281 |
| 2015 | 259 |
| 2016 | 209 |
| 2017 | 234 |
| 2018 | 257 |
| 2019 | 280 |
| 2020 | 312 |
| 2021 | 353 |
| 2022 | 316 |
| 2023 | 290 |