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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1961 | 20 |
| 1962 | 34 |
| 1964 | 5 |
| 1965 | 44 |
| 1966 | 79 |
| 1967 | 118 |
| 1968 | 148 |
| 1969 | 166 |
| 1970 | 117 |
| 1971 | 145 |
| 1972 | 157 |
| 1973 | 135 |
| 1974 | 171 |
| 1975 | 158 |
| 1976 | 133 |
| 1977 | 125 |
| 1978 | 109 |
| 1979 | 120 |
| 1980 | 94 |
| 1981 | 95 |
| 1982 | 109 |
| 1983 | 99 |
| 1984 | 107 |
| 1985 | 125 |
| 1986 | 109 |
| 1987 | 104 |
| 1988 | 137 |
| 1989 | 156 |
| 1990 | 123 |
| 1991 | 132 |
| 1992 | 112 |
| 1993 | 106 |
| 1994 | 105 |
| 1995 | 92 |
| 1996 | 98 |
| 1997 | 91 |
| 1998 | 87 |
| 1999 | 65 |
| 2000 | 65 |
| 2001 | 86 |
| 2002 | 77 |
| 2003 | 71 |
| 2004 | 58 |
| 2005 | 67 |
| 2006 | 64 |
| 2007 | 56 |
| 2008 | 60 |
| 2009 | 58 |
| 2010 | 62 |
| 2011 | 56 |
| 2012 | 63 |
| 2013 | 44 |
| 2014 | 52 |
| 2015 | 64 |
| 2016 | 51 |
| 2017 | 47 |
| 2018 | 39 |
| 2019 | 33 |
| 2020 | 26 |
| 2021 | 28 |
| 2022 | 22 |
| 2023 | 21 |
| 2024 | 21 |
| 2025 | 16 |
| 2026 | 16 |