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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1971 | 2 |
| 1975 | 1 |
| 1978 | 8 |
| 1979 | 10 |
| 1980 | 10 |
| 1981 | 20 |
| 1982 | 23 |
| 1983 | 33 |
| 1984 | 57 |
| 1985 | 64 |
| 1986 | 65 |
| 1987 | 101 |
| 1988 | 206 |
| 1989 | 309 |
| 1990 | 623 |
| 1991 | 799 |
| 1992 | 800 |
| 1993 | 953 |
| 1994 | 1078 |
| 1995 | 1484 |
| 1996 | 1643 |
| 1997 | 1938 |
| 1998 | 2179 |
| 1999 | 2516 |
| 2000 | 2540 |
| 2001 | 2448 |
| 2002 | 2523 |
| 2003 | 2738 |
| 2004 | 2837 |
| 2005 | 3138 |
| 2006 | 3402 |
| 2007 | 3594 |
| 2008 | 3557 |
| 2009 | 3598 |
| 2010 | 3990 |
| 2011 | 4503 |
| 2012 | 5012 |
| 2013 | 5633 |
| 2014 | 5657 |
| 2015 | 5764 |
| 2016 | 5845 |
| 2017 | 5864 |
| 2018 | 5895 |
| 2019 | 6250 |
| 2020 | 6116 |
| 2021 | 5483 |
| 2022 | 3734 |
| 2023 | 2265 |
| 2024 | 1035 |