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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1967 | 5 |
| 1968 | 13 |
| 1969 | 16 |
| 1970 | 21 |
| 1971 | 23 |
| 1972 | 15 |
| 1973 | 21 |
| 1974 | 14 |
| 1975 | 29 |
| 1976 | 31 |
| 1977 | 24 |
| 1978 | 22 |
| 1979 | 24 |
| 1980 | 22 |
| 1981 | 34 |
| 1982 | 38 |
| 1983 | 24 |
| 1984 | 30 |
| 1985 | 47 |
| 1986 | 64 |
| 1987 | 83 |
| 1988 | 117 |
| 1989 | 144 |
| 1990 | 218 |
| 1991 | 409 |
| 1992 | 492 |
| 1993 | 568 |
| 1994 | 648 |
| 1995 | 801 |
| 1996 | 810 |
| 1997 | 811 |
| 1998 | 820 |
| 1999 | 1015 |
| 2000 | 1152 |
| 2001 | 1366 |
| 2002 | 1431 |
| 2003 | 1596 |
| 2004 | 1695 |
| 2005 | 1839 |
| 2006 | 1977 |
| 2007 | 2188 |
| 2008 | 2307 |
| 2009 | 2280 |
| 2010 | 2474 |
| 2011 | 2616 |
| 2012 | 2679 |
| 2013 | 2729 |
| 2014 | 2700 |
| 2015 | 2646 |
| 2016 | 2338 |
| 2017 | 2324 |
| 2018 | 2270 |
| 2019 | 1916 |
| 2020 | 1854 |
| 2021 | 1327 |
| 2022 | 285 |
| 2023 | 124 |
| 2024 | 56 |