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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 2 |
| 1966 | 7 |
| 1967 | 6 |
| 1968 | 3 |
| 1969 | 2 |
| 1970 | 7 |
| 1971 | 7 |
| 1973 | 2 |
| 1974 | 5 |
| 1975 | 7 |
| 1976 | 3 |
| 1977 | 47 |
| 1978 | 35 |
| 1979 | 35 |
| 1980 | 1318 |
| 1981 | 3095 |
| 1982 | 3185 |
| 1983 | 3374 |
| 1984 | 3512 |
| 1985 | 3495 |
| 1986 | 3607 |
| 1987 | 3808 |
| 1988 | 3928 |
| 1989 | 4120 |
| 1990 | 4308 |
| 1991 | 4573 |
| 1992 | 4758 |
| 1993 | 4908 |
| 1994 | 5017 |
| 1995 | 5052 |
| 1996 | 4924 |
| 1997 | 4811 |
| 1998 | 4981 |
| 1999 | 5340 |
| 2000 | 5450 |
| 2001 | 5801 |
| 2002 | 5812 |
| 2003 | 6206 |
| 2004 | 6905 |
| 2005 | 7750 |
| 2006 | 8772 |
| 2007 | 9579 |
| 2008 | 10328 |
| 2009 | 11148 |
| 2010 | 12357 |
| 2011 | 13476 |
| 2012 | 14062 |
| 2013 | 14640 |
| 2014 | 14742 |
| 2015 | 14650 |
| 2016 | 14133 |
| 2017 | 13840 |
| 2018 | 14035 |
| 2019 | 14279 |
| 2020 | 15929 |
| 2021 | 17099 |
| 2022 | 15110 |
| 2023 | 14524 |
| 2024 | 10130 |
| 2025 | 9 |