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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 6 |
| 1969 | 18 |
| 1970 | 14 |
| 1971 | 21 |
| 1972 | 35 |
| 1973 | 30 |
| 1974 | 35 |
| 1975 | 30 |
| 1976 | 56 |
| 1977 | 60 |
| 1978 | 41 |
| 1979 | 49 |
| 1980 | 53 |
| 1981 | 50 |
| 1982 | 68 |
| 1983 | 74 |
| 1984 | 54 |
| 1985 | 62 |
| 1986 | 54 |
| 1987 | 68 |
| 1988 | 74 |
| 1989 | 72 |
| 1990 | 57 |
| 1991 | 71 |
| 1992 | 86 |
| 1993 | 71 |
| 1994 | 72 |
| 1995 | 107 |
| 1996 | 153 |
| 1997 | 115 |
| 1998 | 170 |
| 1999 | 154 |
| 2000 | 199 |
| 2001 | 195 |
| 2002 | 203 |
| 2003 | 188 |
| 2004 | 214 |
| 2005 | 222 |
| 2006 | 224 |
| 2007 | 211 |
| 2008 | 239 |
| 2009 | 265 |
| 2010 | 292 |
| 2011 | 333 |
| 2012 | 364 |
| 2013 | 387 |
| 2014 | 426 |
| 2015 | 418 |
| 2016 | 429 |
| 2017 | 450 |
| 2018 | 438 |
| 2019 | 430 |
| 2020 | 374 |
| 2021 | 294 |
| 2022 | 36 |
| 2023 | 4 |
| 2024 | 2 |