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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 1 |
| 1969 | 7 |
| 1970 | 5 |
| 1971 | 2 |
| 1972 | 5 |
| 1973 | 2 |
| 1974 | 4 |
| 1977 | 1 |
| 1978 | 22 |
| 1979 | 66 |
| 1980 | 110 |
| 1981 | 118 |
| 1982 | 137 |
| 1983 | 130 |
| 1984 | 123 |
| 1985 | 114 |
| 1986 | 126 |
| 1987 | 103 |
| 1988 | 128 |
| 1989 | 188 |
| 1990 | 196 |
| 1991 | 174 |
| 1992 | 172 |
| 1993 | 152 |
| 1994 | 139 |
| 1995 | 148 |
| 1996 | 168 |
| 1997 | 186 |
| 1998 | 219 |
| 1999 | 252 |
| 2000 | 241 |
| 2001 | 219 |
| 2002 | 252 |
| 2003 | 255 |
| 2004 | 264 |
| 2005 | 277 |
| 2006 | 343 |
| 2007 | 402 |
| 2008 | 397 |
| 2009 | 464 |
| 2010 | 518 |
| 2011 | 618 |
| 2012 | 669 |
| 2013 | 728 |
| 2014 | 868 |
| 2015 | 920 |
| 2016 | 918 |
| 2017 | 876 |
| 2018 | 997 |
| 2019 | 974 |
| 2020 | 1033 |
| 2021 | 604 |
| 2022 | 446 |
| 2023 | 362 |
| 2024 | 140 |