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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1964 | 1 |
| 1965 | 20 |
| 1966 | 22 |
| 1967 | 29 |
| 1968 | 34 |
| 1969 | 62 |
| 1970 | 57 |
| 1971 | 66 |
| 1972 | 80 |
| 1973 | 85 |
| 1974 | 115 |
| 1975 | 129 |
| 1976 | 150 |
| 1977 | 159 |
| 1978 | 134 |
| 1979 | 125 |
| 1980 | 121 |
| 1981 | 89 |
| 1982 | 71 |
| 1983 | 56 |
| 1984 | 49 |
| 1985 | 65 |
| 1986 | 82 |
| 1987 | 76 |
| 1988 | 98 |
| 1989 | 79 |
| 1990 | 105 |
| 1991 | 94 |
| 1992 | 112 |
| 1993 | 198 |
| 1994 | 268 |
| 1995 | 273 |
| 1996 | 216 |
| 1997 | 189 |
| 1998 | 130 |
| 1999 | 125 |
| 2000 | 112 |
| 2001 | 159 |
| 2002 | 154 |
| 2003 | 192 |
| 2004 | 223 |
| 2005 | 254 |
| 2006 | 188 |
| 2007 | 180 |
| 2008 | 168 |
| 2009 | 148 |
| 2010 | 139 |
| 2011 | 171 |
| 2012 | 145 |
| 2013 | 124 |
| 2014 | 123 |
| 2015 | 127 |
| 2016 | 134 |
| 2017 | 83 |
| 2018 | 61 |
| 2019 | 67 |
| 2020 | 75 |
| 2021 | 52 |
| 2022 | 13 |
| 2023 | 2 |
| 2024 | 10 |
| 2025 | 2 |