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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1959 | 1 |
| 1961 | 1 |
| 1967 | 1 |
| 1971 | 1 |
| 1973 | 2 |
| 1976 | 1 |
| 1977 | 4 |
| 1978 | 5 |
| 1979 | 2 |
| 1980 | 2 |
| 1981 | 7 |
| 1982 | 4 |
| 1983 | 7 |
| 1984 | 4 |
| 1985 | 3 |
| 1986 | 4 |
| 1987 | 9 |
| 1988 | 25 |
| 1989 | 47 |
| 1990 | 136 |
| 1991 | 220 |
| 1992 | 368 |
| 1993 | 459 |
| 1994 | 442 |
| 1995 | 525 |
| 1996 | 436 |
| 1997 | 532 |
| 1998 | 708 |
| 1999 | 641 |
| 2000 | 708 |
| 2001 | 597 |
| 2002 | 737 |
| 2003 | 769 |
| 2004 | 923 |
| 2005 | 1081 |
| 2006 | 1265 |
| 2007 | 1400 |
| 2008 | 1480 |
| 2009 | 1598 |
| 2010 | 2065 |
| 2011 | 2356 |
| 2012 | 2333 |
| 2013 | 2742 |
| 2014 | 2419 |
| 2015 | 2487 |
| 2016 | 2936 |
| 2017 | 2799 |
| 2018 | 2810 |
| 2019 | 2915 |
| 2020 | 2954 |
| 2021 | 2680 |
| 2022 | 2012 |
| 2023 | 1674 |
| 2024 | 1781 |
| 2025 | 5 |