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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1958 | 6 |
| 1959 | 29 |
| 1960 | 33 |
| 1961 | 28 |
| 1962 | 49 |
| 1963 | 71 |
| 1964 | 82 |
| 1965 | 58 |
| 1966 | 44 |
| 1967 | 47 |
| 1968 | 58 |
| 1969 | 69 |
| 1970 | 71 |
| 1971 | 64 |
| 1972 | 65 |
| 1973 | 50 |
| 1974 | 75 |
| 1975 | 61 |
| 1976 | 41 |
| 1977 | 50 |
| 1978 | 38 |
| 1979 | 32 |
| 1980 | 75 |
| 1981 | 111 |
| 1982 | 170 |
| 1983 | 243 |
| 1984 | 274 |
| 1985 | 260 |
| 1986 | 265 |
| 1987 | 257 |
| 1988 | 179 |
| 1989 | 171 |
| 1990 | 182 |
| 1991 | 156 |
| 1992 | 120 |
| 1993 | 116 |
| 1994 | 118 |
| 1995 | 104 |
| 1996 | 108 |
| 1997 | 90 |
| 1998 | 85 |
| 1999 | 79 |
| 2000 | 81 |
| 2001 | 70 |
| 2002 | 64 |
| 2003 | 69 |
| 2004 | 59 |
| 2005 | 49 |
| 2006 | 41 |
| 2007 | 52 |
| 2008 | 39 |
| 2009 | 43 |
| 2010 | 42 |
| 2011 | 43 |
| 2012 | 38 |
| 2013 | 42 |
| 2014 | 43 |
| 2015 | 35 |
| 2016 | 37 |
| 2017 | 41 |
| 2018 | 36 |
| 2019 | 29 |
| 2020 | 34 |
| 2021 | 35 |
| 2022 | 32 |
| 2023 | 25 |
| 2024 | 12 |