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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 5 |
| 1965 | 17 |
| 1966 | 50 |
| 1967 | 71 |
| 1968 | 106 |
| 1969 | 74 |
| 1970 | 74 |
| 1971 | 97 |
| 1972 | 57 |
| 1973 | 65 |
| 1974 | 71 |
| 1975 | 38 |
| 1976 | 52 |
| 1977 | 38 |
| 1978 | 36 |
| 1979 | 41 |
| 1980 | 53 |
| 1981 | 34 |
| 1982 | 26 |
| 1983 | 40 |
| 1984 | 46 |
| 1985 | 42 |
| 1986 | 32 |
| 1987 | 21 |
| 1988 | 36 |
| 1989 | 33 |
| 1990 | 34 |
| 1991 | 42 |
| 1992 | 33 |
| 1993 | 26 |
| 1994 | 33 |
| 1995 | 45 |
| 1996 | 92 |
| 1997 | 84 |
| 1998 | 78 |
| 1999 | 82 |
| 2000 | 68 |
| 2001 | 175 |
| 2002 | 332 |
| 2003 | 388 |
| 2004 | 422 |
| 2005 | 539 |
| 2006 | 577 |
| 2007 | 645 |
| 2008 | 646 |
| 2009 | 759 |
| 2010 | 768 |
| 2011 | 956 |
| 2012 | 923 |
| 2013 | 1113 |
| 2014 | 1202 |
| 2015 | 1122 |
| 2016 | 1191 |
| 2017 | 1233 |
| 2018 | 1209 |
| 2019 | 1018 |
| 2020 | 689 |
| 2021 | 350 |
| 2022 | 79 |
| 2023 | 35 |
| 2024 | 80 |