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Table representation of search results timeline featuring number of search results per year.
| Year | Number of Results |
|---|---|
| 1947 | 1 |
| 1952 | 2 |
| 1953 | 1 |
| 1954 | 2 |
| 1955 | 1 |
| 1956 | 4 |
| 1957 | 4 |
| 1958 | 8 |
| 1959 | 6 |
| 1960 | 4 |
| 1961 | 6 |
| 1962 | 1 |
| 1965 | 8 |
| 1966 | 30 |
| 1967 | 30 |
| 1968 | 37 |
| 1969 | 38 |
| 1970 | 42 |
| 1971 | 47 |
| 1972 | 60 |
| 1973 | 58 |
| 1974 | 51 |
| 1975 | 47 |
| 1976 | 48 |
| 1977 | 42 |
| 1978 | 49 |
| 1979 | 56 |
| 1980 | 58 |
| 1981 | 73 |
| 1982 | 71 |
| 1983 | 58 |
| 1984 | 81 |
| 1985 | 94 |
| 1986 | 93 |
| 1987 | 107 |
| 1988 | 114 |
| 1989 | 142 |
| 1990 | 139 |
| 1991 | 119 |
| 1992 | 108 |
| 1993 | 137 |
| 1994 | 121 |
| 1995 | 134 |
| 1996 | 112 |
| 1997 | 116 |
| 1998 | 134 |
| 1999 | 135 |
| 2000 | 131 |
| 2001 | 178 |
| 2002 | 183 |
| 2003 | 184 |
| 2004 | 164 |
| 2005 | 236 |
| 2006 | 224 |
| 2007 | 274 |
| 2008 | 229 |
| 2009 | 291 |
| 2010 | 290 |
| 2011 | 259 |
| 2012 | 297 |
| 2013 | 270 |
| 2014 | 254 |
| 2015 | 288 |
| 2016 | 246 |
| 2017 | 211 |
| 2018 | 246 |
| 2019 | 263 |
| 2020 | 244 |
| 2021 | 166 |
| 2022 | 94 |
| 2023 | 77 |
| 2024 | 63 |