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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1952 | 1 |
| 1953 | 2 |
| 1954 | 2 |
| 1955 | 8 |
| 1957 | 4 |
| 1958 | 10 |
| 1959 | 2 |
| 1960 | 2 |
| 1961 | 5 |
| 1962 | 1 |
| 1965 | 12 |
| 1966 | 59 |
| 1967 | 72 |
| 1968 | 94 |
| 1969 | 101 |
| 1970 | 126 |
| 1971 | 163 |
| 1972 | 180 |
| 1973 | 185 |
| 1974 | 183 |
| 1975 | 195 |
| 1976 | 158 |
| 1977 | 157 |
| 1978 | 152 |
| 1979 | 152 |
| 1980 | 137 |
| 1981 | 130 |
| 1982 | 141 |
| 1983 | 141 |
| 1984 | 171 |
| 1985 | 157 |
| 1986 | 169 |
| 1987 | 126 |
| 1988 | 147 |
| 1989 | 159 |
| 1990 | 191 |
| 1991 | 134 |
| 1992 | 159 |
| 1993 | 146 |
| 1994 | 127 |
| 1995 | 140 |
| 1996 | 143 |
| 1997 | 141 |
| 1998 | 119 |
| 1999 | 114 |
| 2000 | 125 |
| 2001 | 126 |
| 2002 | 129 |
| 2003 | 142 |
| 2004 | 144 |
| 2005 | 157 |
| 2006 | 165 |
| 2007 | 169 |
| 2008 | 164 |
| 2009 | 144 |
| 2010 | 150 |
| 2011 | 170 |
| 2012 | 176 |
| 2013 | 154 |
| 2014 | 147 |
| 2015 | 140 |
| 2016 | 128 |
| 2017 | 120 |
| 2018 | 103 |
| 2019 | 87 |
| 2020 | 87 |
| 2021 | 84 |
| 2022 | 50 |
| 2023 | 22 |
| 2024 | 17 |