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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1968 | 2 |
| 1971 | 3 |
| 1972 | 10 |
| 1973 | 11 |
| 1974 | 25 |
| 1975 | 17 |
| 1976 | 22 |
| 1977 | 30 |
| 1978 | 55 |
| 1979 | 82 |
| 1980 | 116 |
| 1981 | 105 |
| 1982 | 171 |
| 1983 | 135 |
| 1984 | 182 |
| 1985 | 263 |
| 1986 | 219 |
| 1987 | 273 |
| 1988 | 236 |
| 1989 | 215 |
| 1990 | 292 |
| 1991 | 294 |
| 1992 | 299 |
| 1993 | 339 |
| 1994 | 380 |
| 1995 | 390 |
| 1996 | 413 |
| 1997 | 497 |
| 1998 | 475 |
| 1999 | 576 |
| 2000 | 628 |
| 2001 | 670 |
| 2002 | 874 |
| 2003 | 1067 |
| 2004 | 1393 |
| 2005 | 1855 |
| 2006 | 2240 |
| 2007 | 2556 |
| 2008 | 3024 |
| 2009 | 3111 |
| 2010 | 3641 |
| 2011 | 4046 |
| 2012 | 4454 |
| 2013 | 5021 |
| 2014 | 4632 |
| 2015 | 4299 |
| 2016 | 4364 |
| 2017 | 3952 |
| 2018 | 3654 |
| 2019 | 3553 |
| 2020 | 2783 |
| 2021 | 1914 |
| 2022 | 300 |
| 2023 | 113 |
| 2024 | 966 |