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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1953 | 1 |
| 1954 | 1 |
| 1960 | 1 |
| 1961 | 3 |
| 1962 | 2 |
| 1963 | 4 |
| 1964 | 25 |
| 1965 | 68 |
| 1966 | 64 |
| 1967 | 63 |
| 1968 | 101 |
| 1969 | 133 |
| 1970 | 160 |
| 1971 | 138 |
| 1972 | 146 |
| 1973 | 189 |
| 1974 | 232 |
| 1975 | 195 |
| 1976 | 174 |
| 1977 | 162 |
| 1978 | 129 |
| 1979 | 146 |
| 1980 | 135 |
| 1981 | 142 |
| 1982 | 133 |
| 1983 | 130 |
| 1984 | 177 |
| 1985 | 178 |
| 1986 | 172 |
| 1987 | 148 |
| 1988 | 169 |
| 1989 | 173 |
| 1990 | 170 |
| 1991 | 158 |
| 1992 | 173 |
| 1993 | 152 |
| 1994 | 161 |
| 1995 | 140 |
| 1996 | 154 |
| 1997 | 148 |
| 1998 | 112 |
| 1999 | 117 |
| 2000 | 139 |
| 2001 | 122 |
| 2002 | 99 |
| 2003 | 72 |
| 2004 | 54 |
| 2005 | 60 |
| 2006 | 46 |
| 2007 | 48 |
| 2008 | 50 |
| 2009 | 33 |
| 2010 | 32 |
| 2011 | 42 |
| 2012 | 37 |
| 2013 | 33 |
| 2014 | 16 |
| 2015 | 31 |
| 2016 | 16 |
| 2017 | 17 |
| 2018 | 15 |
| 2019 | 18 |
| 2020 | 12 |
| 2021 | 3 |
| 2022 | 11 |
| 2023 | 3 |
| 2024 | 2 |