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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1963 | 2 |
| 1964 | 1 |
| 1965 | 20 |
| 1966 | 36 |
| 1967 | 40 |
| 1968 | 56 |
| 1969 | 48 |
| 1970 | 59 |
| 1971 | 75 |
| 1972 | 71 |
| 1973 | 63 |
| 1974 | 65 |
| 1975 | 69 |
| 1976 | 115 |
| 1977 | 88 |
| 1978 | 89 |
| 1979 | 117 |
| 1980 | 113 |
| 1981 | 97 |
| 1982 | 94 |
| 1983 | 109 |
| 1984 | 144 |
| 1985 | 139 |
| 1986 | 125 |
| 1987 | 105 |
| 1988 | 138 |
| 1989 | 153 |
| 1990 | 140 |
| 1991 | 126 |
| 1992 | 158 |
| 1993 | 158 |
| 1994 | 140 |
| 1995 | 111 |
| 1996 | 106 |
| 1997 | 144 |
| 1998 | 150 |
| 1999 | 108 |
| 2000 | 112 |
| 2001 | 128 |
| 2002 | 115 |
| 2003 | 133 |
| 2004 | 166 |
| 2005 | 153 |
| 2006 | 163 |
| 2007 | 178 |
| 2008 | 186 |
| 2009 | 173 |
| 2010 | 215 |
| 2011 | 212 |
| 2012 | 212 |
| 2013 | 198 |
| 2014 | 181 |
| 2015 | 188 |
| 2016 | 201 |
| 2017 | 195 |
| 2018 | 174 |
| 2019 | 157 |
| 2020 | 137 |
| 2021 | 77 |
| 2022 | 17 |
| 2023 | 2 |
| 2024 | 4 |