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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1957 | 1 |
| 1960 | 3 |
| 1961 | 1 |
| 1963 | 6 |
| 1964 | 3 |
| 1965 | 7 |
| 1966 | 3 |
| 1967 | 5 |
| 1968 | 5 |
| 1969 | 2 |
| 1970 | 5 |
| 1971 | 3 |
| 1972 | 6 |
| 1973 | 8 |
| 1974 | 3 |
| 1975 | 8 |
| 1976 | 1 |
| 1977 | 1 |
| 1978 | 4 |
| 1979 | 16 |
| 1980 | 83 |
| 1981 | 105 |
| 1982 | 130 |
| 1983 | 124 |
| 1984 | 144 |
| 1985 | 135 |
| 1986 | 170 |
| 1987 | 188 |
| 1988 | 245 |
| 1989 | 309 |
| 1990 | 330 |
| 1991 | 323 |
| 1992 | 384 |
| 1993 | 430 |
| 1994 | 458 |
| 1995 | 492 |
| 1996 | 547 |
| 1997 | 602 |
| 1998 | 607 |
| 1999 | 719 |
| 2000 | 821 |
| 2001 | 922 |
| 2002 | 1012 |
| 2003 | 1369 |
| 2004 | 1596 |
| 2005 | 1976 |
| 2006 | 2339 |
| 2007 | 2687 |
| 2008 | 3156 |
| 2009 | 3593 |
| 2010 | 3932 |
| 2011 | 4608 |
| 2012 | 5248 |
| 2013 | 6046 |
| 2014 | 6719 |
| 2015 | 7615 |
| 2016 | 7883 |
| 2017 | 8809 |
| 2018 | 9703 |
| 2019 | 10664 |
| 2020 | 12769 |
| 2021 | 14562 |
| 2022 | 16759 |
| 2023 | 16256 |
| 2024 | 18384 |
| 2025 | 21261 |
| 2026 | 10362 |
| 2027 | 1 |